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我必须继承一个自定义的主要活动类，它是一个 3rd 方库，我不能对该类进行任何更改。此类将 FLAG_LAYOUT_IN_SCREEN 添加到窗口中，并导致应用程序全屏显示。但是，我想阻止这种行为。那么，问题是如何清除/禁用全屏模式并显示导航栏/状态栏？

这是自定义的主要活动类

public class CustomActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
       setContentView(new FrameLayout(this));
       // rest...
    }
}

这是我的活动课：

public class MyActivity extends CustomActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       // tried these attempts below, but none of them prevented 
       // the fullscreen mode which hides navigation bar and status bar.
       this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
       this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
       this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    }
}

注意：您也可以轻松地在示例应用程序上对其进行测试。您会注意到，一旦添加FLAG_LAYOUT_IN_SCREEN，全屏模式也会保留用于不同的尝试。

public class MainActivity extends Activity {
    private FrameLayout mainLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.getWindow().addFlags(FLAG_LAYOUT_IN_SCREEN);
        setContentView(new FrameLayout(this));
        this.getWindow().clearFlags(FLAG_LAYOUT_IN_SCREEN);
        this.getWindow().addFlags(FLAG_KEEP_SCREEN_ON);
    }
4

1 回答 1

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请将以下内容应用到应用程序以不全屏（显示状态栏）

getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE);       
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
于 2020-11-07T18:15:19.913 回答