Android权限笔记

error:Android permission denied for window type 2002/2003

1.Android sdk>=23的时候要注意系统浮选对话框的权限。

A.方案

var sysytemAlert:AlertDialog.Builder = AlertDialog.Builder(context);

sysytemAlert.setTitle("System AlertDialog");

sysytemAlert.setMessage("this is system alertDialog,Close me please \"ok\" btn");

sysytemAlert.setCancelable(false);

sysytemAlert.setPositiveButton("OK"){dialog, which->  Toast.makeText(context,"come on",Toast.LENGTH_LONG).show()}

if (Build.VERSION.SDK_INT >=23) {

if (!Settings.canDrawOverlays(context)) {

val intent = Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION)

context?.startActivity(intent)

return

    }else {

//绘ui代码, 这里说明6.0系统已经有权限了

alertDialog.window.setType(WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY);

}

}else {

//绘ui代码,这里android6.0以下的系统直接绘出即可

    alertDialog.window.setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);

}

alertDialog.show();

B.方案

protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

            if(!Settings.canDrawOverlays(getApplicationContext())) {

                //启动Activity让用户授权

            }

        }

    }

@Override protected void onActivityResult(int requestCode, int resultCode, Intent data){super.onActivityResult(requestCode,resultCode,data);

if(requestCode== 100)

{if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.M) {if(Settings.canDrawOverlays(this))

 {

 }

else{//权限被拒绝} } }

2.Builder.VERSION.SDK>=27 自定义静态广播事件发生时候需要设置setComponent的CompentName

var myIntent:Intent = Intent("广播xKey");

myIntent.setComponent(ComponentName(packageName,

className))

sendBroadcast(myIntent)