androidstudio自学笔记附原视频链接

原视频链接： https://www.bilibili.com/video/BV1Rt411e76H
软件安装与下载链接： https://blog.csdn.net/xuw_xy/article/details/89524335/
笔记部分：（为了自己能记住，后期回忆有印象）

1.LinearLayout（线性布局）

这里颜色直接设置成#000,然后按小方框选颜色。
match_parent表示让当前控件的大小和父布局的大小一样，也就是由父布局来决定当前控件的大小
wrap_content表示让当前的控件大小能够刚好包含里面的内容，也就是由控件内容决定当前控件的大小
垂直布局： android:orientation=“vertical”
水平布局：android:orientation=“horizontal”
LinearLayout默认水平排列
内边距padding：android:padding=“10dp”
android:paddingBottom=“10dp”
外边距margin:android:layout_margin=“10dp”
android:layout_marginLeft=“10dp”
对齐方式： android:gravity=“center”
android:gravity=“bottom”
weight权重问题

android:layout_weight=“1”
android:layout_width=“50dp”
android:layout_height=“match_parent” />

< View
android:layout_weight=“1”
android:layout_width=“match_parent”
android:layout_height=“match_parent” />
这里有一个点：weight表示权重如果两个模块都是1则两个平分父布局，各占1/2。如果其中一个android:layout_width="50dp"这样已经占了一部分，则总的先减去这个已占得然后两个再根据权重平分。

2.RelativeLayout(相对布局）

android:layout_alignParentBottom="true"靠父空间底部对齐
android:layout_alignParentRight="true"靠父空间右部对齐
android：layout_toRightOf=@id/view_1"格式：靠view_1这个模块Right右对齐
android：layout_belowOf=@id/view_1"下对齐

3.TextView

练习运行效果图：

TextViewActivity里的代码
1.截图
2.代码

package com.example.zt.happyapplication;

import android.graphics.Paint;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

public class TextViewActivity extends AppCompatActivity {

    private TextView mTv3,mTv4,mTv5;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_text_view);
        
        mTv3=(TextView)findViewById(R.id.tv_3);
        mTv3.getPaint().setFlags(Paint.STRIKE_THRU_TEXT_FLAG);//中划线
        mTv3.getPaint().setAntiAlias(true);//去除锯齿

        mTv4=(TextView)findViewById(R.id.tv_4);
        mTv4.getPaint().setFlags(Paint.UNDERLINE_TEXT_FLAG);//下划线

        mTv5=(TextView)findViewById(R.id.tv_5);//第一步声明空间，第二步找到空间，第三步类型转换。
        mTv5.setSelected(true);
    }
}

activity_text_view.xml
1.截图

2.代码

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
   android:orientation="vertical">
    <TextView
        android:id="@+id/tv_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="测试1"
        android:textColor="#000000"
        android:textSize="60dp"/>
    <TextView
        android:id="@+id/tv_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="测试2"
        android:textColor="#000000"
        android:textSize="60dp"
        android:layout_marginTop="10dp"/>
    <TextView
        android:id="@+id/tv_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:drawableRight="@drawable/jiantou"
        android:text="下拉栏1"
        android:textColor="#000000"
        android:textSize="50dp" />
    <TextView
        android:id="@+id/tv_4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:drawableRight="@drawable/jiantou"
        android:text="下拉栏2"
        android:textColor="#000000"
        android:textSize="50dp" />
    <TextView
        android:id="@+id/tv_5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="50dp"
        android:text="哈哈跑马灯实现哈哈哈"
        android:textColor="#000000"
        android:textSize="50dp"
        android:singleLine="true"
        android:ellipsize="marquee"
        android:marqueeRepeatLimit="marquee_forever"
        android:focusableInTouchMode="true"/>
LinearLayout>

4.Button

效果图

activity_button.xml代码

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="15dp">
    <Button
        android:id="@+id/btn_1"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:text="按钮1"
        android:textSize="20sp"
        android:textColor="#3cff00"
        android:background="#aaaab5ff"/>
    <Button
        android:id="@+id/btn_2"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:text="按钮2"
        android:textSize="20sp"
        android:textColor="#3cff00"
        android:background="@drawable/bg_btn2"
        android:layout_below="@+id/btn_1"
        android:layout_marginTop="20dp"/>
    <Button
        android:id="@+id/btn_3"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:text="按钮3"
        android:textSize="20sp"
        android:textColor="#3cff00"
        android:background="@drawable/bg_btn3"
        android:layout_below="@+id/btn_2"
        android:layout_marginTop="20dp"/>
    <Button
        android:id="@+id/btn_4"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:text="按钮4"
        android:textSize="20sp"
        android:textColor="#3cff00"
        android:background="@drawable/bg_btn4"
        android:layout_below="@+id/btn_3"
        android:onClick="showToast"
        android:layout_marginTop="20dp"/>
RelativeLayout>

ButtonActivity代码

package com.example.zt.happyapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class ButtonActivity extends AppCompatActivity {
    private Button mBtn3;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_button);
        mBtn3=(Button)findViewById(R.id.btn_3);
        mBtn3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(ButtonActivity.this,"btn3被点击了",Toast.LENGTH_SHORT).show();
            }
        });
    }
    public void showToast(View view)
    {
        Toast.makeText(this,"我被点击了",Toast.LENGTH_SHORT).show();
    }
}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <Button
        android:id="@+id/btn_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Textview"/>
    <Button
        android:id="@+id/btn_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
       android:text="button"/>
    LinearLayout>

MainActivity
**

package com.example.zt.happyapplication;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
    private Button mBtnTextView;
    private Button mbtnButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mBtnTextView = (Button) findViewById(R.id.btn_textview);
        mBtnTextView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //跳转到TextView演示界面
                Intent intent=new Intent(MainActivity.this,TextViewActivity.class);
                startActivity(intent);
            }
        });
        mbtnButton=(Button)findViewById(R.id.btn_button) ;
        mbtnButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //跳转到Button演示界面
                Intent intent=new Intent(MainActivity.this,ButtonActivity.class);
                startActivity(intent);
            }
        });
    }
}

**

5.EditText&简单登录界面制作

效果图：

activity_edit_text.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <EditText
        android:id="@+id/et_1"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:textSize="30sp"
        android:textColor="#FFAD33"
        android:hint="用户名:"
        android:background="@drawable/bg_username"
        android:paddingLeft="20dp"
        android:paddingRight="20dp"
        android:drawablePadding="5dp"
        android:drawableLeft="@drawable/username"
        android:layout_marginTop="50dp"/>
    <EditText
        android:id="@+id/et_2"
        android:layout_width="match_parent"
        android:layout_height="80dp"
        android:textSize="30sp"
        android:textColor="#FFAD33"
        android:inputType="textPassword"
        android:hint="密码:"
        android:layout_below="@+id/et_1"
        android:layout_marginTop="10dp"
        android:background="@drawable/bg_username"
        android:paddingLeft="20dp"
        android:paddingRight="20dp"
        android:drawablePadding="5dp"
        android:drawableLeft="@drawable/password"/>
    <Button
        android:id="@+id/btn_login"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_marginTop="50dp"
        android:layout_below="@+id/et_2"
        android:text="登录"
        android:textColor="#fff"
        android:textSize="50sp"
        android:background="@drawable/bg_btn4"/>
RelativeLayout>

EditTextActivity

package com.example.zt.happyapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class EditTextActivity extends AppCompatActivity {
    private Button mBtnLodin;
    private EditText mEtUserName;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_edit_text);
        mBtnLodin = (Button)findViewById(R.id.btn_login);
        mBtnLodin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(EditTextActivity.this,"登录成功！",Toast.LENGTH_SHORT).show();
            }
        });
        mEtUserName=(EditText)findViewById(R.id.et_1);
        mEtUserName.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                 Log.d("edittext",s.toString());
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });
    }
}

6.RadioButton

效果图

MainActivity

package com.example.zt.happyapplication;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
    private Button mBtnTextView;
    private Button mBtnButton;
    private  Button mBtnEditText;
    private Button mBtnRadioButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mBtnTextView = (Button) findViewById(R.id.btn_textview);
        mBtnButton = (Button) findViewById(R.id.btn_button);
        mBtnEditText=(Button) findViewById(R.id.btn_edittext);
        mBtnRadioButton = (Button) findViewById(R.id.btn_radiobutton);
        setListeners();
    }
        private void setListeners(){
        OnClick onClick=new OnClick();
            mBtnTextView.setOnClickListener(onClick);
            mBtnButton.setOnClickListener(onClick);
            mBtnEditText.setOnClickListener(onClick);
            mBtnRadioButton.setOnClickListener(onClick);
        }
        private class OnClick implements View.OnClickListener {
            @Override
            public void onClick(View v) {
                Intent intent = null;
                switch (v.getId()) {
                    case R.id.btn_textview:
                        //跳转到TextView演示界面
                        intent = new Intent(MainActivity.this, TextViewActivity.class);
                        break;
                    case R.id.btn_button:
                        //跳转到Button演示界面
                        intent = new Intent(MainActivity.this, ButtonActivity.class);
                        break;
                    case R.id.btn_radiobutton:
                        //跳转到Button演示界面
                        intent = new Intent(MainActivity.this, RadioButtonActivity.class);
                        break;
                }
                startActivity(intent);
            }
        }
}

RadioButtonActivity

package com.example.zt.happyapplication;

import android.support.annotation.IdRes;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

public class RadioButtonActivity extends AppCompatActivity {
    private RadioGroup mRg1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_radio_button);
        mRg1 = (RadioGroup) findViewById(R.id.rg_1);
        mRg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) {
                RadioButton radioButton=(RadioButton) group.findViewById(checkedId);
                Toast.makeText(RadioButtonActivity.this,radioButton.getText(),Toast.LENGTH_SHORT).show();//打印RadioButton
            }
        });
    }
}

activity_radio_button.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <RadioGroup
        android:id="@+id/rg_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <RadioButton
            android:id="@+id/rb_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="男"
            android:checked="true"
            android:textSize="18sp"
            android:textColor="#8833aa"/>
        <RadioButton
            android:id="@+id/rb_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="女"
            android:textSize="18sp"
            android:textColor="#8833aa"/>
    RadioGroup>
    <RadioGroup
        android:id="@+id/rg_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_marginTop="100dp">
        <RadioButton
            android:id="@+id/rb_3"
            android:layout_width="60dp"
            android:layout_height="30dp"
            android:text="男"
            android:background="@drawable/selector_orange_radiobutton"
            android:button="@null"
            android:checked="true"
            android:textSize="18sp"
            android:textColor="#8833aa"/>
        <RadioButton
            android:id="@+id/rb_4"
            android:layout_width="60dp"
            android:layout_height="30dp"
            android:gravity="center"
            android:layout_marginLeft="10dp"
            android:text="女"
            android:background="@drawable/selector_orange_radiobutton"
            android:button="@null"
            android:textSize="18sp"
            android:textColor="#8833aa"/>
    RadioGroup>

RelativeLayout>

7.复选框CheckBox

效果图

CheckBoxActivity

package com.example.zt.happyapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;

public class CheckBoxActivity extends AppCompatActivity {
    private CheckBox mCb5,mCb6;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_check_box);
        mCb5=(CheckBox) findViewById(R.id.cb_5);
        mCb6=(CheckBox) findViewById(R.id.cb_6);
        mCb5.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                Toast.makeText(CheckBoxActivity.this,isChecked?"选中：":"未选中：",Toast.LENGTH_SHORT).show();
            }
        });
        mCb6.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                Toast.makeText(CheckBoxActivity.this,isChecked?"选中：":"未选中：",Toast.LENGTH_SHORT).show();
            }
        });
    }
}

activity_check_box.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="15dp">
    <TextView
        android:id="@+id/tv_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="你会哪些移动开发:"
        android:textSize="20sp"
        android:textColor="#000"
        android:layout_marginBottom="10dp"/>
    <CheckBox
        android:id="@+id/cb_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Android"
        android:textSize="20sp"
        android:layout_below="@+id/tv_title"/>
    <CheckBox
        android:id="@+id/cb_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="ios"
        android:textSize="20sp"
        android:layout_below="@+id/cb_1"/>
    <CheckBox
        android:id="@+id/cb_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="h5"
        android:textSize="20sp"
        android:layout_below="@+id/cb_2"/>
    <CheckBox
        android:id="@+id/cb_4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="其他"
        android:textSize="20sp"
        android:layout_below="@+id/cb_3"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:layout_below="@+id/cb_4">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="你的兴趣："
            android:textSize="20sp"
            android:textColor="#000"/>
        <CheckBox
            android:id="@+id/cb_5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="编程"
            android:button="@drawable/bg_checkbox"
            android:paddingLeft="10dp"
            android:textSize="20sp"
            android:layout_marginTop="10dp" />
        <CheckBox
            android:id="@+id/cb_6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="打球"
            android:button="@drawable/bg_checkbox"
            android:paddingLeft="10dp"
            android:textSize="20sp"
            android:layout_marginTop="10dp" />
    LinearLayout>
RelativeLayout>

8.ImageView

这里的使用第三方库加载网络图片我配了两天还是不行，配置错误不知道什么原因，累了就这样吧。不管了，万一以后工作要遇到再说吧。

9.列表视图ListView

效果图

ListViewActivity

package com.example.zt.happyapplication.listview;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.zt.happyapplication.R;

/**
 * Created by zt on 2021/7/4.
 */

public class MyListAdapter extends BaseAdapter {
    private Context mContext;
    private LayoutInflater mLayoutInflate;

    MyListAdapter(Context context){
        this.mContext = context;
        mLayoutInflate = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return 10;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }
    static class ViewHolder{
        public ImageView iamgeView;
        public TextView tvTitle,tvTime,tvContent;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder=null;
        if(convertView == null)
        {
            convertView = mLayoutInflate.inflate(R.layout.layout_list_item,null);
            holder = new ViewHolder();
            holder.iamgeView=convertView.findViewById(R.id.iv);
            holder.tvTitle = (TextView)convertView.findViewById(R.id.tv_title);
            holder.tvTime=convertView.findViewById(R.id.tv_time);
            holder.tvContent=convertView.findViewById(R.id.tv_content);
            convertView.setTag(holder);
        }
        else{
            holder = (ViewHolder)convertView.getTag();
        }
        //给控件赋值
        holder.tvTitle.setText("这是标题");
        holder.tvTime.setText("2021-07-05");
        holder.tvContent.setText("这是内容");
        return  convertView;
    }
}

listview.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <ListView
        android:id="@+id/lv_1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:listSelector="@drawable/list_item">ListView>
LinearLayout>

MyListAdapter.java

package com.example.zt.happyapplication.listview;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.zt.happyapplication.R;

/**
 * Created by zt on 2021/7/4.
 */

public class MyListAdapter extends BaseAdapter {
    private Context mContext;
    private LayoutInflater mLayoutInflate;

    MyListAdapter(Context context){
        this.mContext = context;
        mLayoutInflate = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return 10;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }
    static class ViewHolder{
        public ImageView iamgeView;
        public TextView tvTitle,tvTime,tvContent;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder=null;
        if(convertView == null)
        {
            convertView = mLayoutInflate.inflate(R.layout.layout_list_item,null);
            holder = new ViewHolder();
            holder.iamgeView=convertView.findViewById(R.id.iv);
            holder.tvTitle = (TextView)convertView.findViewById(R.id.tv_title);
            holder.tvTime=convertView.findViewById(R.id.tv_time);
            holder.tvContent=convertView.findViewById(R.id.tv_content);
            convertView.setTag(holder);
        }
        else{
            holder = (ViewHolder)convertView.getTag();
        }
        //给控件赋值
        holder.tvTitle.setText("这是标题");
        holder.tvTime.setText("2021-07-05");
        holder.tvContent.setText("这是内容");
        return  convertView;
    }
}

list_item.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true" android:drawable="@color/colorAccent">item>
    <item android:state_pressed="true" android:drawable="@color/colorAccent">item>
    <item android:state_focused="true" android:drawable="@color/colorAccent"/>
    <item android:drawable="@color/colorTransparent">item>
selector>

10.网格视图GridView

GridViewActivity

package com.example.zt.happyapplication.gridview;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;
import com.example.zt.happyapplication.R;
/**
 * Created by zt on 2021/7/5.
 */
public class GridViewActivity extends AppCompatActivity {
    private GridView mGv;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_gridview);
        mGv = (GridView)findViewById(R.id.gv);
        mGv.setAdapter(new MyGridViewAdapter(GridViewActivity.this));
        mGv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(GridViewActivity.this,"点击 pos:"+position,Toast.LENGTH_SHORT).show();
            }
        });
        mGv.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(GridViewActivity.this,"长按 pos:"+position,Toast.LENGTH_SHORT).show();
                return true;
            }
        });
    }
}

MyGridViewAdapter

package com.example.zt.happyapplication.gridview;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.zt.happyapplication.R;

/**
 * Created by zt on 2021/7/5.
 */

public class MyGridViewAdapter extends BaseAdapter {
    private Context mContext;
    private LayoutInflater mLayoutInflater;
    public MyGridViewAdapter(Context context){
        this.mContext=context;
        mLayoutInflater=LayoutInflater.from(context);

    }

    @Override
    public int getCount() {
        return 10;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }
    static class ViewHolder{
        public ImageView imageView;
        public TextView textView;
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder=null;
        if(convertView==null){
           convertView = mLayoutInflater.inflate(R.layout.layout_grid_item,null);
            holder=new ViewHolder();
            holder.imageView=(ImageView)convertView.findViewById(R.id.iv_grid);
            holder.textView=(TextView)convertView.findViewById(R.id.tv_title);
            convertView.setTag(holder);
        }else{
            holder=(ViewHolder)convertView.getTag();
        }
        //赋值
        holder.textView.setText("马");
        return convertView;
    }
}

activity_gridview.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="15dp">
    <GridView
        android:id="@+id/gv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:numColumns="3"
        android:horizontalSpacing="10dp">GridView>
LinearLayout>

layout_grid_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/iv_grid"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:scaleType="fitCenter"
        android:background="@drawable/horse"/>

    <TextView
        android:id="@+id/tv_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="hello"
        android:gravity="center"
        android:textColor="@color/colorAccent"
        android:layout_marginTop="10dp"/>
LinearLayout>

11滚动视图ScrollView&HorizontalScrollView

效果图（列表里的东西可以上下左右滑动）

activity_main.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <Button
            android:id="@+id/btn_textview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Textview"
            android:textAllCaps="false"/>
        <Button
            android:id="@+id/btn_button"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="button"
            android:textAllCaps="false"/>
        <Button
            android:id="@+id/btn_edittext"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="EditText"
            android:textAllCaps="false"/>
        <Button
            android:id="@+id/btn_radiobutton"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="RadioButton"
            android:textAllCaps="false"
            android:layout_marginTop="10dp"/>
        <Button
            android:id="@+id/btn_checkbox"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="CheckBox"
            android:textAllCaps="false"
            android:layout_marginTop="10dp"/>
        <Button
            android:id="@+id/btn_imageview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="ImageView"
            android:textAllCaps="false"
            android:layout_marginTop="10dp"/>
        <Button
            android:id="@+id/btn_listview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="ListView"
            android:layout_marginTop="10dp"/>
        <Button
            android:id="@+id/btn_gridview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="GridView"
            android:layout_marginTop="10dp"/>
        <HorizontalScrollView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">
            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="horizontal">
                <Button
                    android:layout_width="200dp"
                    android:layout_height="300dp"
                    android:text="Text"
                    android:textAllCaps="false"/>
                <Button
                    android:layout_width="200dp"
                    android:layout_height="300dp"
                    android:text="Text"
                    android:textAllCaps="false"/>
                <Button
                    android:layout_width="200dp"
                    android:layout_height="300dp"
                    android:text="Text"
                    android:textAllCaps="false"/>
                <Button
                    android:layout_width="200dp"
                    android:layout_height="300dp"
                    android:text="Text"
                    android:textAllCaps="false"/>
            LinearLayout>
        HorizontalScrollView>
        <Button
            android:id="@+id/btn_test1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="test1"
            android:layout_marginTop="100dp"/>

    LinearLayout>

    ScrollView>

12.RecyclerView(一)

听不懂，跟着把代码敲了一遍。
效果图

LinearRecycleViewActivity.java

package com.example.zt.happyapplication.recycieview;

import android.graphics.Rect;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Toast;

import com.example.zt.happyapplication.R;

public class LinearRecycleViewActivity extends AppCompatActivity {
    private RecyclerView mRvMain;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_linear_recycle_view);
        mRvMain = (RecyclerView)findViewById(R.id.rv_main);
        mRvMain.setLayoutManager(new LinearLayoutManager(LinearRecycleViewActivity.this));
        mRvMain.addItemDecoration(new MyDecoration());//能实现间隔线的函数
        mRvMain.setAdapter(new LinearAdapter(LinearRecycleViewActivity.this, new LinearAdapter.OnItemClickListener() {
            @Override
            public void onClick(int pos) {
                Toast.makeText(LinearRecycleViewActivity.this,"click"+pos,Toast.LENGTH_SHORT).show();
            }
        }));

    }
    class MyDecoration extends RecyclerView.ItemDecoration{
        @Override
        public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
            super.getItemOffsets(outRect, view, parent, state);
            outRect.set(0,0,0,getResources().getDimensionPixelOffset(R.dimen.dividerHeight));
        }
    }
}

RecyclerViewActivity

package com.example.zt.happyapplication.recycieview;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import com.example.zt.happyapplication.R;

public class RecyclerViewActivity extends AppCompatActivity {
    private Button mBtnLinear;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recycle_view);
        mBtnLinear = (Button)findViewById(R.id.btn_linear);
        mBtnLinear.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(RecyclerViewActivity.this,LinearRecycleViewActivity.class);
                startActivity(intent);
            }
        });

    }
}

LinearAdapter

package com.example.zt.happyapplication.recycieview;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.TextView;
import android.widget.Toast;

import com.example.zt.happyapplication.R;

import java.net.InterfaceAddress;
import java.util.List;

/**
 * Created by zt on 2021/7/6.
 */

public class LinearAdapter extends RecyclerView.Adapter<LinearAdapter.LinearViewHolder> {
    private Context mContext;
    private OnItemClickListener mListener;
    public LinearAdapter(Context context,OnItemClickListener listener){
        this.mContext = context;
        this.mListener =listener;
    }
    @Override
    public LinearAdapter.LinearViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new LinearViewHolder(LayoutInflater.from(mContext).inflate(R.layout.layout_linear_item,parent,false));

    }

    @Override
    public void onBindViewHolder(LinearAdapter.LinearViewHolder holder, final int position) {
        holder.textView.setText("Hello world");
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mListener.onClick(position);
            }
        });

    }

    @Override
    public int getItemCount() {
        return 30;
    }
    class LinearViewHolder extends  RecyclerView.ViewHolder{
        private TextView textView;
        public LinearViewHolder(View itemView) {
            super(itemView);
            textView = (TextView)itemView.findViewById(R.id.tv_title);
        }
    }
    public interface OnItemClickListener{
        void onClick(int pos);
    }
}

layout_linear_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:background="@color/colorWhite"
    android:layout_height="wrap_content">
    <TextView
        android:id="@+id/tv_title"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:gravity="center"
        android:textSize="20sp"
        android:textColor="#000"/>
LinearLayout>

activity_recycle_view.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
<Button
    android:id="@+id/btn_linear"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="列表视图"/>
LinearLayout>

activity_linear_recycle_view.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_main"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorGrayDark">

    android.support.v7.widget.RecyclerView>
RelativeLayout>

RecyclerView(二）网格视图

HorRecycleViewActivity

package com.example.zt.happyapplication.recycieview;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.zt.happyapplication.R;

/**
 * Created by zt on 2021/7/6.
 */

public class HorAdapter extends RecyclerView.Adapter<HorAdapter.LinearViewHolder> {
    private Context mContext;
    private OnItemClickListener mListener;
    public HorAdapter(Context context, OnItemClickListener listener){
        this.mContext = context;
        this.mListener =listener;
    }
    @Override
    public HorAdapter.LinearViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new LinearViewHolder(LayoutInflater.from(mContext).inflate(R.layout.layout_hor_item,parent,false));

    }

    @Override
    public void onBindViewHolder(HorAdapter.LinearViewHolder holder, final int position) {
        holder.textView.setText("Hello");
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mListener.onClick(position);
            }
        });

    }

    @Override
    public int getItemCount() {
        return 30;
    }
    class LinearViewHolder extends  RecyclerView.ViewHolder{
        private TextView textView;
        public LinearViewHolder(View itemView) {
            super(itemView);
            textView = (TextView)itemView.findViewById(R.id.tv_title);
        }
    }
    public interface OnItemClickListener{
        void onClick(int pos);
    }
}

HorAdapter

package com.example.zt.happyapplication.recycieview;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.zt.happyapplication.R;

/**
 * Created by zt on 2021/7/6.
 */

public class HorAdapter extends RecyclerView.Adapter<HorAdapter.LinearViewHolder> {
    private Context mContext;
    private OnItemClickListener mListener;
    public HorAdapter(Context context, OnItemClickListener listener){
        this.mContext = context;
        this.mListener =listener;
    }
    @Override
    public HorAdapter.LinearViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new LinearViewHolder(LayoutInflater.from(mContext).inflate(R.layout.layout_hor_item,parent,false));

    }

    @Override
    public void onBindViewHolder(HorAdapter.LinearViewHolder holder, final int position) {
        holder.textView.setText("Hello");
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mListener.onClick(position);
            }
        });

    }

    @Override
    public int getItemCount() {
        return 30;
    }
    class LinearViewHolder extends  RecyclerView.ViewHolder{
        private TextView textView;
        public LinearViewHolder(View itemView) {
            super(itemView);
            textView = (TextView)itemView.findViewById(R.id.tv_title);
        }
    }
    public interface OnItemClickListener{
        void onClick(int pos);
    }
}

GridRecyclerViewActivity

package com.example.zt.happyapplication.recycieview;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.zt.happyapplication.R;

/**
 * Created by zt on 2021/7/6.
 */

public class HorAdapter extends RecyclerView.Adapter<HorAdapter.LinearViewHolder> {
    private Context mContext;
    private OnItemClickListener mListener;
    public HorAdapter(Context context, OnItemClickListener listener){
        this.mContext = context;
        this.mListener =listener;
    }
    @Override
    public HorAdapter.LinearViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new LinearViewHolder(LayoutInflater.from(mContext).inflate(R.layout.layout_hor_item,parent,false));

    }

    @Override
    public void onBindViewHolder(HorAdapter.LinearViewHolder holder, final int position) {
        holder.textView.setText("Hello");
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mListener.onClick(position);
            }
        });

    }

    @Override
    public int getItemCount() {
        return 30;
    }
    class LinearViewHolder extends  RecyclerView.ViewHolder{
        private TextView textView;
        public LinearViewHolder(View itemView) {
            super(itemView);
            textView = (TextView)itemView.findViewById(R.id.tv_title);
        }
    }
    public interface OnItemClickListener{
        void onClick(int pos);
    }
}

GridAdapter

package com.example.zt.happyapplication.recycieview;
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.zt.happyapplication.R;

/**
 * Created by zt on 2021/7/6.
 */

public class HorAdapter extends RecyclerView.Adapter<HorAdapter.LinearViewHolder> {
    private Context mContext;
    private OnItemClickListener mListener;
    public HorAdapter(Context context, OnItemClickListener listener){
        this.mContext = context;
        this.mListener =listener;
    }
    @Override
    public HorAdapter.LinearViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new LinearViewHolder(LayoutInflater.from(mContext).inflate(R.layout.layout_hor_item,parent,false));

    }

    @Override
    public void onBindViewHolder(HorAdapter.LinearViewHolder holder, final int position) {
        holder.textView.setText("Hello");
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mListener.onClick(position);
            }
        });

    }

    @Override
    public int getItemCount() {
        return 30;
    }
    class LinearViewHolder extends  RecyclerView.ViewHolder{
        private TextView textView;
        public LinearViewHolder(View itemView) {
            super(itemView);
            textView = (TextView)itemView.findViewById(R.id.tv_title);
        }
    }
    public interface OnItemClickListener{
        void onClick(int pos);
    }
}

layout_grid_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/iv_grid"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:scaleType="fitCenter"
        android:background="@drawable/horse"/>
    <TextView
        android:id="@+id/tv_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="hello"
        android:gravity="center"
        android:textColor="@color/colorAccent"
        android:layout_marginTop="10dp"/>
LinearLayout>

layout_grid_recycleview_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:background="@color/colorWhite"
    android:layout_height="wrap_content">
    <TextView
        android:id="@+id/tv_title"
        android:layout_width="wrap_content"
        android:layout_height="50dp"
        android:gravity="center"
        android:textSize="20sp"
        android:textColor="#000"
        />
LinearLayout>

layout_hor_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:background="@color/colorWhite"
    android:layout_height="wrap_content">
    <TextView
        android:id="@+id/tv_title"
        android:layout_width="wrap_content"
        android:layout_height="50dp"
        android:gravity="center"
        android:textSize="20sp"
        android:textColor="#000" />
LinearLayout>

activity_hor_recycle_view.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_hor"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorGrayDark">
    android.support.v7.widget.RecyclerView>
LinearLayout>