android - android - requestWindowFeature(Window.FEATURE_NO_TITLE) 异常

Question

当使用点击开始按钮时，我正在设置一个特定的活动全屏。

在这种情况下，showStopButton()称为。

它运行良好。但是如果我插入

 requestWindowFeature(Window.FEATURE_NO_TITLE);

然后它崩溃，说明应该在添加内容之前调用它。

我应该如何处理它来设置NO_TITLEw FULL_SCREEN？

    private void showStopButton(){

    // requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
    getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
    getWindow().findViewById(android.R.id.content).requestLayout();

    // handle element visibility
((Button)findViewById(R.id.stopButton)).setEnabled(false);
    ((Button)findViewById(R.id.startButton)).setVisibility(View.GONE);
    ((Button)findViewById(R.id.stopButton)).setVisibility(View.VISIBLE);
    ((SeekBar)findViewById(R.id.seekBar1)).setVisibility(View.VISIBLE);
    ((Button)findViewById(R.id.resetButton)).setVisibility(View.GONE);
    ((Button)findViewById(R.id.saveButton)).setVisibility(View.GONE);
}

当重新显示开始按钮时，我有相反的过程，并且它运行正常在这种情况下，我删除了全屏模式

     private void showStartButton(){

        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        getWindow().findViewById(android.R.id.content).requestLayout();
        ....
    }

score 4 · Accepted Answer

它是如此简单......我只需要隐藏ActionBar......然后在回到标准屏幕时显示它......

   private void showStopButton(){
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
        ActionBar actionBar = getActionBar();
        actionBar.hide();
        getWindow().findViewById(android.R.id.content).requestLayout();

score 3 · Accepted Answer

使用 -public class MainActivity extends Activity- 而不是 -public class MainActivity extends ActionBarActivity-

score 2 · Accepted Answer

所以：

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

    // Make this activity, full screen
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);

    // Hide the Title bar of this activity screen
    getWindow().requestFeature(Window.FEATURE_NO_TITLE);

    setContentView(R.layout.main);

    // MORE INIT STUFF HERE...
    //img = (ImageView) findViewById(R.id.imgRandom);
    //btnRandom = (Button) findViewById(R.id.btnRandom);
}

score 1 · Accepted Answer

试试这个......

public class MainActivity extends Activity {

    Context context;

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

        context = this;

        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_main);
    }
}

score 1 · Accepted Answer

添加这个。

requestWindowFeature(Window.FEATURE_NO_TITLE);

前

 super.onCreate(savedInstanceState);
 setContentView(R.layout.your activity);

score 0 · Accepted Answer

它可能是这样的：

public class MainActivity extends AppCompatActivity {
   ...
    private final Handler handler = new Handler();

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

        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getSupportActionBar().hide(); 
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        setContentView(R.layout.activity_main);

我在警车灯和警报器的例子中使用了上面的代码。当应用程序启动时，灯光动画自动启动，并且警报器在后台响起。

来源：安卓警灯和警笛

android - android - requestWindowFeature(Window.FEATURE_NO_TITLE) 异常

6 回答 6

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