В моем android проекте я добавляю ActionBarDrawerToggle. Но эта ошибка возникает.
это происходит так: «ActionBarDrawerToggle () в ActionBarDrawerToggle не может применяться к:».
почему возникает эта ошибка?
как я могу решить эту ошибку ?
мой код:
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
public static Socket clientSocket = null;
public static ObjectInputStream objectInputStream = null;
public static ObjectOutputStream objectOutputStream = null;
private static AppCompatActivity thisActivity;
private boolean doubleBackToExitPressedOnce = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
setContentView(R.layout.activity_main);
// selecting connect fragment by default
replaceFragment(R.id.nav_connect);
thisActivity = this;
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
/*FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});*/
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open,
R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkForPermission();
}
}
@TargetApi(Build.VERSION_CODES.M)
private void checkForPermission() {
if (thisActivity.checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if
(thisActivity.shouldShowRequestPermissionRationale(Manifest.permission.READ_EXTERNAL_STORAGE)) {
Toast.makeText(thisActivity, "Read Permission is necessary to transfer",
Toast.LENGTH_LONG).show();
} else {
thisActivity.requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
1);
//2 is integer constant for WRITE_EXTERNAL_STORAGE permission, uses in
onRequestPermissionResult
}
}
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
if (doubleBackToExitPressedOnce) {
super.onBackPressed();
return;
}
doubleBackToExitPressedOnce = true;
Toast.makeText(this, "Please click BACK again to exit", Toast.LENGTH_SHORT).show();
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
doubleBackToExitPressedOnce = false;
}
}, 2000);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
onNavigationItemSelected(item);
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
Fragment fragment = null;
int id = item.getItemId();
replaceFragment(id);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
private void replaceFragment(int id) {
Fragment fragment = null;
if (id == R.id.nav_connect) {
fragment = new ConnectFragment();
} else if (id == R.id.nav_touchpad) {
fragment = new TouchpadFragment();
} else if (id == R.id.nav_keyboard) {
fragment = new KeyboardFragment();
} else if (id == R.id.nav_file_transfer) {
fragment = new FileTransferFragment();
} else if (id == R.id.nav_file_download) {
fragment = new FileDownloadFragment();
} else if (id == R.id.nav_image_viewer) {
fragment = new ImageViewerFragment();
} else if (id == R.id.nav_media_player) {
fragment = new MediaPlayerFragment();
} else if (id == R.id.nav_presentation) {
fragment = new PresentationFragment();
} else if (id == R.id.nav_power_off) {
fragment = new PowerOffFragment();
} else if (id == R.id.action_help) {
fragment = new HelpFragment();
} else if (id == R.id.action_live_screen) {
fragment = new LiveScreenFragment();
}
if (fragment != null) {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.content_frame, fragment);
fragmentTransaction.commit();
}
}
protected void onDestroy() {
super.onDestroy();
try {
if (MainActivity.clientSocket != null) {
MainActivity.clientSocket.close();
}
if (MainActivity.objectOutputStream != null) {
MainActivity.objectOutputStream.close();
}
if (MainActivity.objectInputStream != null) {
MainActivity.objectInputStream.close();
}
} catch(Exception e) {
e.printStackTrace();
}
Server.closeServer();
}
//this method is called from fragments to send message to server (Desktop)
public static void sendMessageToServer(String message) {
if (MainActivity.clientSocket != null) {
new SendMessageToServer().execute(String.valueOf(message), "STRING");
/*try {
MainActivity.objectOutputStream.writeObject(message);
MainActivity.objectOutputStream.flush();
} catch (Exception e) {
e.printStackTrace();
socketException();
}*/
}
}
public static void sendMessageToServer(int message) {
if (MainActivity.clientSocket != null) {
new SendMessageToServer().execute(String.valueOf(message), "INT");
/*try {
MainActivity.objectOutputStream.writeObject(message);
MainActivity.objectOutputStream.flush();
} catch (Exception e) {
e.printStackTrace();
socketException();
}*/
}
}
public static void socketException() {
//Toast.makeText(thisActivity, "Connection Closed", Toast.LENGTH_LONG).show();
if (MainActivity.clientSocket != null) {
try {
MainActivity.clientSocket.close();
MainActivity.objectOutputStream.close();
MainActivity.clientSocket = null;
} catch(Exception e2) {
e2.printStackTrace();
}
}
}
public static void sendMessageToServer(float message) {
if (MainActivity.clientSocket != null) {
new SendMessageToServer().execute(String.valueOf(message), "FLOAT");
/*try {
MainActivity.objectOutputStream.writeObject(message);
MainActivity.objectOutputStream.flush();
} catch (Exception e) {
e.printStackTrace();
socketException();
}*/
}
}
public static void sendMessageToServer(long message) {
if (MainActivity.clientSocket != null) {
new SendMessageToServer().execute(String.valueOf(message), "LONG");
/*try {
MainActivity.objectOutputStream.writeObject(message);
MainActivity.objectOutputStream.flush();
} catch (Exception e) {
e.printStackTrace();
socketException();
}*/
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case 2: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, "Click again to download", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Failed to download", Toast.LENGTH_SHORT).show();
}
return;
}
case 1: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
//Toast.makeText(this, "Click again to download", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "File Transfer will not work", Toast.LENGTH_SHORT).show();
}
return;
}
}
}
}
почему возникает эта ошибка?
как я могу решить эту проблему ошибка?
В моем проекте android я добавляю ActionBarDrawerToggle. Но эта ошибка возникает.
это происходит так: «ActionBarDrawerToggle () в ActionBarDrawerToggle не может применяться к:».