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授予權限後我獲得空白屏幕。授予權限後的空白屏幕
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
int PERMISSION_ALL = 1;
String[] PERMISSIONS = {Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.CAMERA};
if(!hasPermissions(this, PERMISSIONS)){
Log.d("permission","permission");
ActivityCompat.requestPermissions(this, PERMISSIONS, PERMISSION_ALL);
}
}
public static boolean hasPermissions(Context context, String... permissions) {
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
for (String permission : permissions) {
if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
return false;
}
}
}
return true;
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions,
int[] grantResults) {
Log.d("requestCode",String.valueOf(requestCode));
switch (requestCode) {
case 1: {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
//Do your work.
// finish();
//startActivity(getIntent());
Intent intent = new Intent(MainActivity.this, MainActivity.class);
startActivityForResult(intent, 0);
} else {
Toast.makeText(this, "Until you grant the permission, we cannot proceed further", Toast.LENGTH_SHORT).show();
}
return;
}
default:
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
我得到對話框詢問相機和位置的權限。讓我得到一個空白的屏幕和手機掛起後。
我得到「調試器不再有效」,沒有別的。我得到允許權限對話框,但我沒有得到權限標籤,也沒有調用我的OnRequestPermissionsResult()。
可以請別人幫我這個嗎?
你的LogCat說什麼?我認爲你可以在檢查'hasPermissions()'後看到「permission」標籤,但是'requestCode'是否爲1? 你在ActivityMAin.java中檢查嗎?我假設因爲_setContentView(R.layout.activity_main)_。如果是這樣,爲什麼你想與MainActivity一起'startActivityForResult'? – thorin86
我得到「調試器不再有效」,沒有別的。我得到允許權限對話框,但我沒有得到權限標籤,也沒有調用我的OnRequestPermissionsResult()。 – asifa