我能够使用运行时权限构建应用程序。在启动屏幕上，第一次显示启动屏幕，从第二次开始应用程序会卡在启动屏幕上。这是我的代码。我遵循了这个链接。
https://developer.android.com/training/permissions/requesting.html
我已经创建了它，但只有第一次可以完美地运行，从第二次开始就会卡在启动屏幕上。
if (android.os.Build.VERSION.SDK_INT >= 23)
{
// Here, thisActivity is the current activity
if (ContextCompat.checkSelfPermission(SplashScreen.this,
Manifest.permission.READ_PHONE_STATE)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(SplashScreen.this,
Manifest.permission.READ_PHONE_STATE)) {
// Show an expanation 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 {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(SplashScreen.this,
new String[]{Manifest.permission.READ_PHONE_STATE},
MY_PERMISSIONS_REQUEST_READ_PHONE_STATE);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_READ_PHONE_STATE: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Intent i = new Intent(SplashScreen.this, EmtyActivity.class);
startActivity(i);
// close this activity
finish();
} else {
// Contact permissions have not been granted yet. Request them directly.
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_PHONE_STATE},
MY_PERMISSIONS_REQUEST_READ_PHONE_STATE);
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}