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  • android 实现桌面显示内容

    //获取windowmanager 对象

    WindowManager wm = (WindowManager) getApplicationContext().getSystemService(WINDOW_SERVICE);

    //初始化桌面需显示的视图
    View view = LayoutInflater.from(context).inflate(R.layout.message_item_im_left, null);

    //获取layoutparams对象 设置view的在桌面显示的样式
    WindowManager.LayoutParams params = new WindowManager.LayoutParams();


    params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT | WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY;
    params.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL | LayoutParams.FLAG_NOT_FOCUSABLE;
    //设置视图的宽高
    params.width = WindowManager.LayoutParams.FILL_PARENT;
    params.height = WindowManager.LayoutParams.WRAP_CONTENT;

    //设置透明度
    params.alpha = 80;

    params.gravity=Gravity.LEFT|Gravity.TOP;
    //以屏幕左上角为原点,设置x、y初始值
    params.x = 0;
    params.y = 0;

    //把视图添加到桌面显示
    wm.addView(view, params);

    所需开启权限

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

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  • 原文地址:https://www.cnblogs.com/b422/p/3858486.html
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