SYSTEM_ALERT_WINDOW 的运行时权限

Question

当用户第一次打开应用程序时，我需要自动获得以下权限的用户权限

1. 电话
2. 通话记录
3. 总在最前面

电话工作正常。如何获得始终处于最佳状态的权限

主要活动

protected void onCreate(Bundle savedInstanceState) {
    if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.SYSTEM_ALERT_WINDOW)
            != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.SYSTEM_ALERT_WINDOW}, 1);
    }
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

显现

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

Answer 1

为此没有运行时权限/对话框，您必须将用户传递给应用程序设置

public boolean checkStartPermissionRequest() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if (!Settings.canDrawOverlays(this)) {
            Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
                Uri.parse("package:" + getPackageName()));
            startActivityForResult(intent, ACTION_MANAGE_OVERLAY_PERMISSION_REQUEST_CODE);
            return false; // above will start new Activity with proper app setting
        }
    }
    return true; // on lower OS versions granted during apk installation
}

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