基于Android6.0实现弹出Window提示框

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

    <Button
        android:id="@+id/btn_window"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="open window"/>

</LinearLayout>

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

    <LinearLayout
        android:paddingLeft="10dp"
        android:background="@android:color/darker_gray"
        android:orientation="vertical"
        android:layout_width="300dp"
        android:layout_height="200dp">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:text="发件人——13110203356"
            android:textSize="18sp"
            android:textColor="@color/colorPrimary"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:layout_marginTop="5dp"
            android:text="这里是内容"
            android:textSize="15sp"
            android:textColor="@color/colorAccent"/>

        <Button
            android:id="@+id/btn_send"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="10dp"
            android:text="按钮"
            android:layout_gravity="right"/>

    </LinearLayout>

</LinearLayout>

public class MainActivity extends AppCompatActivity
{
    private Button btn_window;
    private Button btn_send;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_window= (Button) findViewById(R.id.btn_window);
        btn_window.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.M)
                {
                    //版本大于6.0则需要判断是否获取了overlays权限
                    if (!Settings.canDrawOverlays(MainActivity.this))
                    {
                        startActivityForResult(new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
                                Uri.parse("package:"+getPackageName())),1);
                    }
                    else
                    {
                        openWindow();
                    }
                }
            }
        });
    }

    private void openWindow()
    {
        //获取WindowManager实例
        final WindowManager windowManager= (WindowManager) getSystemService(Context.WINDOW_SERVICE);
        //获取窗口布局参数实例
        WindowManager.LayoutParams params=new WindowManager.LayoutParams();
        //设置窗口布局参数属性
        params.width= WindowManager.LayoutParams.MATCH_PARENT;
        params.height=WindowManager.LayoutParams.MATCH_PARENT;
        //设置window的显示特性
        params.flags=WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON|WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH;
        //设置窗口半透明
        params.format= PixelFormat.TRANSLUCENT;
        //设置窗口类型
        params.type=WindowManager.LayoutParams.TYPE_PHONE;
        //获取窗口布局实例
        final View windowView=View.inflate(this,R.layout.window,null);
        //获取窗口布局中的按钮实例
        btn_send= (Button) windowView.findViewById(R.id.btn_send);
        //设置点击事件
        btn_send.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                windowManager.removeView(windowView);
            }
        });
        //显示窗口
        windowManager.addView(windowView,params);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        switch (requestCode)
        {
            case 1:
            {
                if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.M)
                {
                    if (Settings.canDrawOverlays(this))
                    {
                        //若用户开启了overlay权限,则打开window
                        openWindow();
                    }
                    else
                    {
                        Toast.makeText(this,"不开启overlay权限",Toast.LENGTH_SHORT).show();
                    }
                }
                break;
            }
        }
    }
}

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>