android开发隐藏了actionbar仍然短暂闪现的解决方法

时间:2021-12-14 22:33:12

有时候我们在代码里隐藏了actionbar,在打开应用时,仍然短暂闪现下actionbar,用户体验很不好。

最简单的方法是 在AndroidManifest.xml中设置主题中配置不显示title或者action,即为:
  <style name="NoTitle" parent="android:Theme.Holo.Light">
    <item name="android:windowActionBar">true</item>
    </style>
或者
 <style name="NoTitle" parent="android:Theme.Holo.Light">
        <item name="android:windowNoTitle">true</item>
    </style>
但是有时候,你如果想显示actionbar,就不能在AndroidManifest.xml这么设置,我试过,做上述设置,就不能显示出actionbar了(这个我试的结果是这样,有可以显示的请给我回复),
这时,怎么解决这个问题呢,在*看到有解决方案,这里贴出来:
Setting android:windowActionBar=false truly disables the ActionBar but then, as you say, getActionBar() returns null. This is solved by:
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
    getActionBar().hide();
    setContentView(R.layout.splash); // be sure you call this AFTER requestFeature
But now there is another problem. After putting windowActionBar=false in the theme, the Activity draws its normal Window Title instead of an ActionBar.
If we try to avoid this by using some of the *.NoTitleBar stock themes or we try to put true in our own theme, it won't work.
The reason is that the ActionBar depends on the Window Title to display itself - that is the ActionBar is a transformed Window Title.
So the trick which can help us out is to add one more thing to our Activity theme xml:
<item name="android:windowActionBar">false</item>
<item name="android:windowTitleSize">0dp</item>
This will make the Window Title with zero height, thus practically invisible .
In your case, after you are done with displaying the splash screen you can simply call
setContentView(R.layout.main);
getActionBar().show()
and you are done. The Activity will start with no ActionBar flickering, nor Window Title showing