ListView+BaseAdapter(机试)

************效果图*****************


ListView+BaseAdapter(机试)_第1张图片
image.png

**********activity.xml***************
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#030303"
>




    
    

    

    



MainActivity***********代码如下***********
···
package com.example.loginjishi;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.text.format.Time;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends Activity {
private ImageView iv_login;
private EditText et_name;
private EditText et_pwd;
private CheckBox cb_pwd;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    iv_login=(ImageView) findViewById(R.id.iv_login);
    iv_login.setOnClickListener(new View.OnClickListener() {
        
        @Override
        public void onClick(View v) {

// String useName = et_name.getText().toString().trim();
// String usePwd = et_pwd.getText().toString().trim();
Toast.makeText(MainActivity.this, "登陆", Toast.LENGTH_SHORT).show();
startActivity(new Intent(MainActivity.this,SecondActivity.class));
}
});
}

}

···
**************效果图*************


ListView+BaseAdapter(机试)_第2张图片
image.png

我们定义一个Item.xml*************
代码如下:
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >



    

    

        
        
        
    

    
     

****activity_second.xml**********代码如下********
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="移动软件学院学员"
android:background="#A52A2A"
android:gravity="center"
android:textSize="20sp"
/>

    
    


同时创建一个Student类保存信息继承BaseAdapter
*************代码如下*******
···
package com.example.loginjishi;

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

public class StudnetAdapter extends BaseAdapter{
private int [] icons ;
private String[] names;
private Context context;

public StudnetAdapter() {
super();
}
public StudnetAdapter(Context context,int[] icons, String[] names) {
super();
this.icons = icons;
this.names = names;
this.context = context;
}
@Override
public int getCount() {

return names.length;

}
@Override
public Object getItem(int position) {

return names[position];

}
@Override
public long getItemId(int position) {

return position;

}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder=null;
if (convertView==null) {
convertView=View.inflate(context,R.layout.item_second, null);
holder= new ViewHolder();

        holder.imageView = (ImageView) convertView.findViewById(R.id.iv_1);
        holder.imageView2 = (ImageView) convertView.findViewById(R.id.iv_1);
        holder.textView1 = (TextView) convertView.findViewById(R.id.tv_1);
        holder.textView2 = (TextView) convertView.findViewById(R.id.tv_2);
        holder.textView3 = (TextView) convertView.findViewById(R.id.tv_3);
        convertView.setTag(holder);
       
} else {
    holder=(ViewHolder) convertView.getTag();   
}
    holder.imageView.setImageResource(icons[position]);
    holder.imageView2.setImageResource(icons[position]);
    holder.textView1.setText(names[position]);
    holder.textView2.setText(names[position]);
    holder.textView3.setText(names[position]);
return convertView;

}

class ViewHolder{
ImageView imageView;
ImageView imageView2;
TextView textView1;
TextView textView2;
TextView textView3;
}
}

···
SecondActivity***************代码如下***********
···
package com.example.loginjishi;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ListView;

public class SecondActivity extends Activity {
private ListView lv_id;

private StudnetAdapter adapter;
String [] names=new String[]{"张三\n身高:188cm\n体重:200kg",
        "张三\n身高:188cm\n体重:200kg","张三\n身高:188cm\n体重:200kg",
        "张三\n身高:188cm\n体重:200kg","张三\n身高:188cm\n体重:200kg","张三\n身高:188cm\n体重:200kg",
        "张三\n身高:188cm\n体重:200kg","张三\n身高:188cm\n体重:200kg","张三\n身高:188cm\n体重:200kg"
        ,"张三\n身高:188cm\n体重:200kg"};
int [] icons=new int[]{R.drawable.user,
        R.drawable.user,R.drawable.user,
        R.drawable.user,R.drawable.user,R.drawable.user,
        R.drawable.user,R.drawable.user,R.drawable.user,R.drawable.user};   


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_second);
    lv_id=(ListView) findViewById(R.id.lv_id);
    
    adapter = new StudnetAdapter(SecondActivity.this,icons,names);
    lv_id.setAdapter(adapter);
    lv_id.setOnItemLongClickListener(new OnItemLongClickListener() {

        @Override
        public boolean onItemLongClick(AdapterView parent, View view,
                int position, long id) {
            new AlertDialog.Builder(SecondActivity.this)
            .setTitle("警告")
            .setMessage("你没有删除权限!")
            .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    
                }
            }).show();
            
            return false;
        }
    });
    
}

}

···

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