如何更改Android應用上的抽屜切換圖標？

Question

我在我的android應用程序中創建了一個抽屜開關。它顯示在屏幕的左上角。當我點擊切換時，列表視圖項目將顯示在左側。 屏幕下方是主屏幕：

當我點擊切換按鈕，將顯示如下：

現在我想改變的切換按鈕的圖標通過以下代碼：

mDrawerToggle.setHomeAsUpIndicator(R.drawable.ic_drawer); 
mDrawerToggle.setDrawerIndicatorEnabled(false); 

切換圖標更改爲我的drawable，但列表視圖項目w當我點擊切換按鈕時不會顯示。我想知道爲什麼更改切換圖標會禁用切換點擊。

下面是我的活動類：

public class MainActivity extends AppCompatActivity { 
    private DrawerLayout mDrawerLayout; 
    private ListView mDrawerList; 
    private ActionBarDrawerToggle mDrawerToggle; 
    private String[] mPlanetTitles; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.activity_main); 
     getSupportActionBar().setDisplayHomeAsUpEnabled(true); 
     getSupportActionBar().setHomeButtonEnabled(true); 
     getSupportActionBar().setDisplayShowTitleEnabled(false); 

     mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); 

     mDrawerList = (ListView) findViewById(R.id.left_drawer); 
     mPlanetTitles = getResources().getStringArray(R.array.planets_array); 
     // Set the adapter for the list view 
     mDrawerList.setAdapter(new ArrayAdapter<String>(this, 
       R.layout.drawer_list_item, mPlanetTitles)); 
     mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); 

     mDrawerToggle = new ActionBarDrawerToggle(
       this,     /* host Activity */ 
       mDrawerLayout, 
       R.string.drawer_open, /* "open drawer" description for accessibility */ 
       R.string.drawer_close /* "close drawer" description for accessibility */ 
     ) { 
      public void onDrawerClosed(View view) { 
       invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() 
      } 

      public void onDrawerOpened(View drawerView) { 
       invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() 
      } 
     }; 
     mDrawerToggle.setHomeAsUpIndicator(R.drawable.ic_drawer); 
//  mDrawerToggle.setDrawerIndicatorEnabled(false); 
     mDrawerLayout.addDrawerListener(mDrawerToggle); 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     if(mDrawerToggle.onOptionsItemSelected(item)) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 

    @Override 
    protected void onPostCreate(Bundle savedInstanceState) { 
     super.onPostCreate(savedInstanceState); 
     // Sync the toggle state after onRestoreInstanceState has occurred. 
     mDrawerToggle.syncState(); 
    } 

    @Override 
    public void onConfigurationChanged(Configuration newConfig) { 
     super.onConfigurationChanged(newConfig); 
     // Pass any configuration change to the drawer toggls 
     mDrawerToggle.onConfigurationChanged(newConfig); 
    } 


    /* The click listner for ListView in the navigation drawer */ 
    private class DrawerItemClickListener implements ListView.OnItemClickListener { 
     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
     } 
    } 
} 

Answer 1

的V7 ActionBarDrawerToggle真的只能做兩件事情：打開/關閉抽屜，它提供的漢堡包圖標和動畫。撥打setDrawerIndicatorEnabled(false)將刪除其圖標，但也會禁用切換。如果你不想要那個圖標，那麼你最好不要使用ActionBarDrawerToggle，並且自己處理打開/關閉抽屜。

• 首先，刪除您所有的代碼爲ActionBarDrawerToggle。
• 然後用getSupportActionBar().setHomeAsUpIndicator()設置你想要的圖標。
• 在onOptionsItemSelected()中，如果MenuItem的ID爲android.R.id.home，請根據需要打開或關閉抽屜。
• 最後，ActionBarDrawerToggle的DrawerLayout.DrawerListener功能可以替換爲基本的SimpleDrawerListener。

---

public class MainActivity extends AppCompatActivity { 
    private DrawerLayout mDrawerLayout; 
    private ListView mDrawerList; 
    private String[] mPlanetTitles; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     getSupportActionBar().setDisplayHomeAsUpEnabled(true); 
     getSupportActionBar().setDisplayShowTitleEnabled(false); 

     mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); 

     mDrawerList = (ListView) findViewById(R.id.left_drawer); 
     mPlanetTitles = getResources().getStringArray(R.array.planets_array); 
     // Set the adapter for the list view 
     mDrawerList.setAdapter(new ArrayAdapter<String>(this, 
      R.layout.drawer_list_item, mPlanetTitles)); 
     mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); 

     // *** Set your desired icon 
     getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_drawer); 

     // *** Replace the DrawerListener functionality of the ActionBarDrawerToggle 
     mDrawerLayout.addDrawerListener(new DrawerLayout.SimpleDrawerListener() { 
       @Override 
       public void onDrawerClosed(View view) { 
        invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() 
       } 

       @Override 
       public void onDrawerOpened(View drawerView) { 
        invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() 
       } 
      } 
     ); 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // *** If the home button is clicked, open/close the drawer as needed 
     if (item.getItemId() == android.R.id.home) { 
      if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) { 
       mDrawerLayout.closeDrawer(GravityCompat.START); 
      } 
      else { 
       mDrawerLayout.openDrawer(GravityCompat.START); 
      } 

      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 

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

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

    /* The click listner for ListView in the navigation drawer */ 
    private class DrawerItemClickListener implements ListView.OnItemClickListener { 
     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
     } 
    } 
} 

Answer 2

使用syncState()改變切換按鈕的圖標後。

mDrawerToggle.setHomeAsUpIndicator(R.drawable.ic_drawer); 
mDrawerToggle.setDrawerIndicatorEnabled(false); 
mDrawerToggle.syncState();