如何在操作欄中設置操作欄圖標

我是android新手，我想在操作欄中顯示操作欄圖標。簡單的任務，但我無法得到這個。我已經上傳了我的Mainactivity.java文件。如何在操作欄中設置操作欄圖標

public class MainActivity extends AppCompatActivity { 

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

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    MenuInflater inflater = getMenuInflater(); 
    inflater.inflate(R.menu.action_bar_icons, 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; 
    } 

    return super.onOptionsItemSelected(item); 
} 
}

這是我的自定義文件menu.xml文件

<?xml version="1.0" encoding="utf-8"?> 
<menu xmlns:android="http://schemas.android.com/apk/res/android"> 
<item android:id="@+id/action_search" 
    android:icon="@drawable/ic_favorite_border_white_48dp" 
    android:title="action_search" 
    android:showAsAction="ifRoom"/> 

<!-- Location Found --> 
<item android:id="@+id/action_location_found" 
    android:icon="@drawable/ic_star_rate_white_18dp" 
    android:title="action_location_found" 
    android:showAsAction="ifRoom" /> 

</menu>

我還加了我Mainfest文件以供參考。

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.user.actionbaricons"> 

<application 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:supportsRtl="true" 
    android:theme="@style/AppTheme"> 
    <activity 
     android:name=".MainActivity" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme.NoActionBar"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application>

而且我運行在我的Android手機（Nexus 5上的Android 6.0.0）感謝adavance應用。

來源

2015-12-16 Anish Kumar

在您的主要活動，你可以設置動作條圖標

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

    ActionBar actionBar = getSupportActionBar(); 
    actionBar.setIcon(R.drawable.ic_button); /* setting icon */ 
}

來源

2016-08-29 07:32:43

如何在操作欄中設置操作欄圖標

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