即使在清单中添加了权限,权限错误仍然会显示 [英] Permission error is still showing even when added permission in manifest
问题描述
我在我的类中实现了AlertDialog
,它扩展了Application类,并且还在清单文件中添加了适当的权限:
I implemented AlertDialog
in my class which extend Application class, also added proper permission in manifest file:
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
查看我的代码:
private void showAlertDialog(Context context) {
DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// do some stuff eg: context.onCreate(super)
}
};
AlertDialog.Builder builder = new AlertDialog.Builder(context)
.setCancelable(false)
.setMessage("Messag...")
.setTitle("Title")
.setPositiveButton("OK", listener);
Dialog dialog = builder.create();
dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
dialog.show();
}
调用方法:
showAlertDialog(getApplicationContext());
I tried this answer, it was working yesterday, now is not working: How to show Dialog Box from the class which extends Application in android?
顺便说一句,它昨天工作了,我不知道为什么今天不工作,我想念什么?
BTW, it was working yesterday, I don't know why it is not working today, what am I missing?
推荐答案
如果您正在检查棉花糖或API级别以上的设备,是否定义了运行时权限?
Did you define runtime permissions if you are checking in marshmallow or above API level devices?
检查覆盖权限
public static int OVERLAY_PERMISSION_REQ_CODE = 1234;
public void someMethod() {
if (!Settings.canDrawOverlays(this)) {
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE);
}}
在onActivityResult中,
In onActivityResult,
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {
if (!Settings.canDrawOverlays(this)) {
// SYSTEM_ALERT_WINDOW permission not granted...
}
}
}
最后----
检查设备是否具有API 23 +
Check if the device has API 23+
如果使用23+ API,则检查用户是否具有权限
if 23+ API then check if the user has permission or not
如果曾经获得许可,请勿将他驱逐至Settings.ACTION_MANAGE_OVERLAY_PERMISSION
,如果尚未许可,则要求进行运行时许可检查
if had permit once don't drive him to Settings.ACTION_MANAGE_OVERLAY_PERMISSION
and if has not to permit yet then ask for runtime permission check
将onCreate()
方法中的行置于下方.将此放在setContentView()
Put below the line in your onCreate()
method. Put this after setContentView()
checkPermission();
现在将下面的代码放在onActivityResult中,
Now put below code in onActivityResult,
@TargetApi(Build.VERSION_CODES.M)
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == ACTION_MANAGE_OVERLAY_PERMISSION_REQUEST_CODE) {
if (!Settings.canDrawOverlays(this)) {
// You don't have permission
checkPermission();
} else {
// Do as per your logic
}
}
}
现在终于有了checkPermission方法代码,
Now finally the checkPermission method code,
public void checkPermission() {
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);
}
}}
并声明一个全局变量
public static int ACTION_MANAGE_OVERLAY_PERMISSION_REQUEST_CODE = 5469;
快乐编码:)
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