public class MainActivity extends AppCompatActivity {
private static final int PERMISSIONS_CODE = 0x001;
private static final String[] NEEDED_PERMISSIONS = new String[]{
Manifest.permission.READ_PHONE_STATE,
Manifest.permission.CAMERA,
Manifest.permission.WRITE_EXTERNAL_STORAGE
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (!checkPermissions(NEEDED_PERMISSIONS)) {
ActivityCompat.requestPermissions(this, NEEDED_PERMISSIONS, PERMISSIONS_CODE);
return;
} else {
toNext();
}
}
private void toNext() {
}
private boolean checkPermissions(String[] neededPermissions) {
if (neededPermissions == null || neededPermissions.length == 0) {
return true;
}
boolean allGranted = true;
for (String neededPermission : neededPermissions) {
allGranted &= ContextCompat.checkSelfPermission(this, neededPermission) == PackageManager.PERMISSION_GRANTED;
}
return allGranted;
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == PERMISSIONS_CODE) {
boolean isAllGranted = true;
for (int grantResult : grantResults) {
isAllGranted &= (grantResult == PackageManager.PERMISSION_GRANTED);
}
if (isAllGranted) {
toNext();
} else {
Toast.makeText(this, "权限被拒！", Toast.LENGTH_SHORT).show();
}
}
}
}
