Android Studio 1-2 Menu菜单与PopupWindow 窗口

一、Menu菜单

1.系统菜单 OptionsMenu

package com.example.day02ex;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
//        getMenuInflater().inflate(R.menu.menu, menu)

        /**
         * 参数一 分组 参数二 id 参数三 排序 参数四 名称
         */
        menu.add(1, 1, 1, "条目1");
        menu.add(1, 3, 3, "条目3");
        menu.add(1, 2, 2, "条目2");
        return super.onCreateOptionsMenu(menu);

    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        int itemId = item.getItemId();
        switch (itemId) {
            case R.id.red:
                Log.i(TAG, "onOptionsItemSelected: 红色");
                break;
            case R.id.blue:
                Log.i(TAG, "onOptionsItemSelected: 蓝色");
                break;
            case R.id.yellow:
                Log.i(TAG, "onOptionsItemSelected: 黄色");
                break;
            case 1:
                Log.i(TAG, "onOptionsItemSelected: 111");
                break;
            case 2:
                Log.i(TAG, "onOptionsItemSelected: 222");
                break;
            case 3:
                Log.i(TAG, "onOptionsItemSelected: 333");
                break;
            default:

        }
        return super.onOptionsItemSelected(item);
    }
}

2.上下文菜单 ContextMenu

package com.example.day02ex;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

public class ConText_Activity extends AppCompatActivity {

    private TextView tv2;
    private static final String TAG = "ConText_Activity";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_context_);

        tv2 = (TextView) findViewById(R.id.tv_2);
        registerForContextMenu(tv2);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
//        getMenuInflater().inflate(R.menu.menu, menu);
        /**
         * 参数一 分组 参数二 id 参数三 排序 参数四 名称
         */
        menu.add(1, 1, 1, "条目1");
        menu.add(1, 3, 3, "条目3");
        menu.add(1, 2, 2, "条目2");
        super.onCreateContextMenu(menu, v, menuInfo);
    }

    @Override
    public boolean onContextItemSelected(@NonNull MenuItem item) {
        int itemId = item.getItemId();
        switch (itemId) {
            case 1:
                Log.i(TAG, "onOptionsItemSelected: 111");
                break;
            case 2:
                Log.i(TAG, "onOptionsItemSelected: 222");
                break;
            case 3:
                Log.i(TAG, "onOptionsItemSelected: 333");
                break;
            case R.id.red:
                Log.i(TAG, "onOptionsItemSelected: 红色");
                break;
            case R.id.blue:
                Log.i(TAG, "onOptionsItemSelected: 蓝色");
                break;
            case R.id.yellow:
                Log.i(TAG, "onOptionsItemSelected: 黄色");
                break;
            default:
        }
        return super.onContextItemSelected(item);
    }
}

3.弹出菜单

package com.example.day02ex;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.widget.PopupMenu;
import android.widget.TextView;

public class Pop_Activity extends AppCompatActivity {

    private TextView tvPop;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pop_);

        tvPop = (TextView) findViewById(R.id.tv_pop);
        tvPop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                PopupMenu popupMenu = new PopupMenu(Pop_Activity.this, tvPop);
                ;
                popupMenu.inflate(R.menu.menu);

                popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                    @Override
                    public boolean onMenuItemClick(MenuItem menuItem) {
                        int itemId = menuItem.getItemId();
                        switch (itemId) {
                            case R.id.red:

                                break;
                            case R.id.blue:

                                break;
                            case R.id.yellow:

                                break;
                            default:
                        }

                        return false;
                    }
                });


                popupMenu.show();
            }
        });
    }
}

二、PopupWindow 窗口

package com.example.day02ex;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.PopupWindow;

public class POP_WindowActivity extends AppCompatActivity {
    private ImageView ivAdd;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_pop__window);
        ivAdd = findViewById(R.id.iv_add);

        ivAdd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                PopupWindow popupWindow = new PopupWindow(POP_WindowActivity.this);
                View inflate = LayoutInflater.from(POP_WindowActivity.this).inflate(R.layout.layout_weixin_popupwindow, null);
                popupWindow.setContentView(inflate);
                popupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
                popupWindow.setWidth(300);

                WindowManager.LayoutParams attributes = getWindow().getAttributes();
                attributes.alpha = 0.5f;
                getWindow().setAttributes(attributes);



                popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
                    @Override
                    public void onDismiss() {
                        WindowManager.LayoutParams attributes = getWindow().getAttributes();
                        attributes.alpha = 1f;
                        getWindow().setAttributes(attributes);
                    }
                });

                popupWindow.setAnimationStyle(R.style.pop_window);



                popupWindow.setOutsideTouchable(true);
                popupWindow.showAsDropDown(ivAdd);
            }
        });
    }

}