无法在Android中隐藏操作栏

Question

我知道有几个人问过这个问题，但这些解决方案似乎并不适合我。我正试图隐藏操作栏。我的代码：

值/ styles.xml

<resources> 

<!-- Base application theme. --> 
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"> 
    <!-- Customize your theme here. --> 
    <item name="colorPrimary">@color/colorPrimary</item> 
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item> 
    <item name="colorAccent">@color/colorAccent</item> 
</style> 

<style name="AppTheme.NoActionBar"> 
    <item name="windowActionBar">false</item> 
    <item name="windowNoTitle">true</item> 
</style> 

<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/> 

<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/> 

</resources> 

这里是我的V21/styles.xml

<resources> 

<!-- Base application theme. --> 
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"> 
    <!-- Customize your theme here. --> 
    <item name="colorPrimary">@color/colorPrimary</item> 
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item> 
    <item name="colorAccent">@color/colorAccent</item> 
</style> 

<style name="AppTheme.NoActionBar"> 
    <item name="windowActionBar">false</item> 
    <item name="windowNoTitle">true</item> 
</style> 

<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/> 

<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/> 

</resources> 

而且我MainActivity.java

package practice.interactivestory; 

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); 
    getSupportActionBar().hide(); 

    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. 
    getMenuInflater().inflate(R.menu.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; 
    } 

    return super.onOptionsItemSelected(item); 
} 
} 

使用getsupport.actionbar.hide()没有工作，并AppCompat.Light.NoActionBar还没有工作。

Answer 1

对于您的MainActivity，您可以使用Activity而不是AppCompatActivity。然后在values/styles.xml中将AppTheme的父项设置为"@android:style/Theme.Holo.Light.DarkActionBar"。如上所述，离开AppTheme.NoActionBar。

然后确保在您的AndroidManifest.xml中，在<application>下设置了android:theme="@style/AppTheme.NoActionBar"。