嘗試檢查許可的代碼,並要求運行權限: 這個類添加到您的項目
public class PermissionUtils {
public static boolean checkPermission(Context context, String permission) {
return ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED;
}
public static void requestPermissions(Activity activity, String messageInCaseOfCustomDialog, int permissionId, String... permissions) {
/* if (o instanceof Fragment) {
FragmentCompat.requestPermissions((Fragment) o, permissions, permissionId);
} else */
if (ActivityCompat.shouldShowRequestPermissionRationale(activity,
permissions[0])) {
showCustomDialogForAskPermission(activity, messageInCaseOfCustomDialog, permissionId, permissions);
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
} else if (/*MySharedPreference.getSharedPrefrence(activity).getBoolean(permissions[0], false)*/) { //Use your Shared Preference
// No explanation needed, we can request the permission.
showCustomDialogForGoToTheSettings(activity, messageInCaseOfCustomDialog);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
} else {
ActivityCompat.requestPermissions(activity, permissions, permissionId);
}
/*MySharedPreference.getSharedPrefrence(activity).edit().putBoolean(permissions[0], true).commit();*/ //Use your Shared Preference
}
private static void showCustomDialogForGoToTheSettings(final Activity activity, String message) {
AlertDialog.Builder dialog = new AlertDialog.Builder(activity);
dialog.setTitle("Permission Required");
dialog.setMessage(message);
dialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", activity.getPackageName(), null);
intent.setData(uri);
activity.startActivity(intent);
}
});
dialog.show();
}
private static void showCustomDialogForAskPermission(final Activity activity, String message, final int permissionId, final String... permissions) {
AlertDialog.Builder dialog = new AlertDialog.Builder(activity);
dialog.setTitle("Permission Required");
dialog.setMessage(message);
dialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
ActivityCompat.requestPermissions(activity, permissions, permissionId);
}
});
dialog.show();
}
}
現在你可以直接檢查,如果你有這個權限或不,假設你想檢查READ_EXTERNAL_STORAGE權限
if (PermissionUtils.checkPermission(RegisterScreenActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE)) {
//Do your work
} else {PermissionUtils.requestPermissions(RegisterScreenActivity.this, "You need to provide storage permission for this service", 101, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE});//ask for permission
}
您還可以跟蹤其onRequestPermissionsResult結果()之類
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case 101:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//permission granted, can do your work
} else {
//permission not granted
}
break;
}
}
感謝回覆方法....我試圖這樣做....在牛軋糖??這項工作...和U可以請告訴我我是錯的.. –
是的,它肯定會工作,我也使用這個,它在所有Android版本 –
罰款工作已經有一個簡單的方法給予檢查權限,即ContextCompat.checkSelfPermission(context,permission)== PackageManager.PERMISSION_GRANTED;它返回true就是app已經有權限,否則返回false。那麼你爲什麼要編寫複雜的代碼來檢查權限 –