Android執行時請求權限

public class MainActivity extends AppCompatActivity {

    final int MY_PERMISSIONS_REQUEST_READ_CONTACTS = 1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initial();
    }

    private void initial() {
        if (ContextCompat.checkSelfPermission(this,
                Manifest.permission.READ_CONTACTS)
                != PackageManager.PERMISSION_GRANTED) {

                    //權限請求           
                    ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.READ_CONTACTS},
                    MY_PERMISSIONS_REQUEST_READ_CONTACTS);
        }
    }

//權限請求回應    
    @Override
    public void onRequestPermissionsResult(int requestCode,
                                           String permissions[], int[] grantResults) {
        switch (requestCode) {
            case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    //權限被接受
                } else {
                //權限被拒絕
                }
                return;
            }

        }
    }

}

以上以聯絡人權限為例，權限請求回應可依照個人需求不寫
manifest記得加

<uses-permission android:name="android.permission.READ_CONTACTS">