在ActionBar中顯示徽標

我有一個操作欄，但只顯示應用程序標題或/和當前片段活動的標題。我想在其中顯示徽標，並且任何添加徽標的嘗試都不成功。在ActionBar中顯示徽標

下面是代碼：

public class MainActivity extends ActionBarActivity { 

    private String[] mOptionMenu; 
    private DrawerLayout mDrawerLayout; 
    private RelativeLayout mDrawerRelativeLayout; 
    private ListView mDrawerList; 
    private ActionBarDrawerToggle mDrawerToggle; 

    private CharSequence mTitleSection; 
    private CharSequence mTitleApp; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     ImageView button=(ImageView)findViewById(R.id.logobutton); 


     mOptionMenu = new String[] { "Opción 1", "Opción 2", "Opción 3" }; 
     mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); 
     mDrawerRelativeLayout = (RelativeLayout) 
     findViewById(R.id.left_drawer); 
     mDrawerList = (ListView) findViewById(R.id.list_view_drawer); 
     mDrawerList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, 
     mOptionMenu)); 

     mDrawerList.setOnItemClickListener(new OnItemClickListener() { 
     @Override 
     public void onItemClick(AdapterView<?> parent, View view, 
     int position, long id) { 

     Fragment fragment = null; 

     switch (position) { 
     case 0: 
     fragment = new FirstFragment(); 
     break; 
     case 1: 
     fragment = new SecondFragment(); 
     break; 
     case 2: 
     fragment = new ThirdFragment(); 
     break; 
     } 

     FragmentManager fragmentManager = getSupportFragmentManager(); 

     fragmentManager.beginTransaction() 
     .replace(R.id.content_frame, fragment).commit(); 

     mDrawerList.setItemChecked(position, true); 

     mTitleSection = mOptionMenu[position]; 
     getSupportActionBar().setTitle(mTitleSection); 

     mDrawerLayout.closeDrawer(mDrawerRelativeLayout); 
     } 
     }); 
     mDrawerList.setItemChecked(0, true); 
     mTitleSection = getTitle(); 
     mTitleApp = getTitle(); 

     mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, 
     R.drawable.ic_drawer, R.string.drawer_open, 
     R.string.drawer_close) { 

     public void onDrawerClosed(View view) { 
      getSupportActionBar().setTitle(mTitleSection); 
      getSupportActionBar().setLogo(R.drawable.logo); 

     ActivityCompat.invalidateOptionsMenu(MainActivity.this); 
     } 

     public void onDrawerOpened(View drawerView) { 
      getSupportActionBar().setTitle(mTitleSection); 
     ActivityCompat.invalidateOptionsMenu(MainActivity.this); 
     getSupportActionBar().setLogo(R.drawable.logo); 

     } 
     }; 

     mDrawerLayout.setDrawerListener(mDrawerToggle); 

     getSupportActionBar().setDisplayHomeAsUpEnabled(true); 
     getSupportActionBar().setHomeButtonEnabled(true); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 

     getMenuInflater().inflate(R.menu.main_activity_actions, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 

     if (mDrawerToggle.onOptionsItemSelected(item)) { 
      return true; 
     } 

     switch (item.getItemId()) { 
     case R.id.action_settings: 
      Toast.makeText(this, "Settings", Toast.LENGTH_SHORT).show(); 
      ; 
      break; 
     default: 
      return super.onOptionsItemSelected(item); 
     } 

     return true; 
    } 

    @Override 
    protected void onPostCreate(Bundle savedInstanceState) { 
     super.onPostCreate(savedInstanceState); 
     mDrawerToggle.syncState(); 
    } 

    @Override 
    public void onConfigurationChanged(Configuration newConfig) { 
     super.onConfigurationChanged(newConfig); 
     mDrawerToggle.onConfigurationChanged(newConfig); 
    } 
}

我嘗試添加代碼中的這條線，但正在沒有圖像顯示：

getSupportActionBar().setLogo(R.drawable.logo);

我也有類似的擔憂，因爲我想徽標可點擊並將用戶引導至MainActivity

來源

2014-11-05 John

在您的清單中，您可以在<application>節點和/或上設置爲每個<activity>節點。

來源

2014-11-05 15:51:17

適用這兩個選項，但遺憾的是它仍然沒有顯示 – John 2014-11-05 15:56:32

您必須通過調用getSupportActionBar().setDisplayUseLogoEnabled(true)在您的ActionBar上啓用Logo功能。在此爲了

android:icon="@drawable/logo"

來源

2014-11-05 15:56:18 Serge

我有添加getSupportActionBar（）。setDisplayUseLogoEnabled（true）;在onCreate – John 2014-11-05 16:00:06

但由於某種原因，它仍然不顯示在 – John 2014-11-05 17:08:17

在你mainfest文件，添加<application>下

getSupportActionBar().setDisplayShowHomeEnabled(true); 
getSupportActionBar().setDisplayUseLogoEnabled(true); 
getSupportActionBar().setLogo(R.drawable.ic_logo);

來源

2014-11-05 16:07:27

謝謝。這已被添加。我覺得這個問題與代碼更相關 – John 2014-11-05 16:09:24

試試這個在您的OnCreate：

來源

2014-12-03 15:07:53

在ActionBar中顯示徽標

回答

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