android 如何在使用全屏对话框时隐藏导航栏

4ngedf3f 于 2022-12-25 发布在 Android

关注(0)|答案(4)|浏览(197)

我正在使用全屏‍Dialog以全屏模式显示ExoPlayer视频。我已经在托管Dialog的Activity的onCreate方法中使用以下代码来隐藏Navigation Bar。

public class BaseActivity extends AppCompatActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //Hide the navigation bar in the beginning
        final View decorView = getWindow().getDecorView();
        int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_FULLSCREEN;
        decorView.setSystemUiVisibility(uiOptions);

        //Set a system bar visibility change listener
        decorView.setOnSystemUiVisibilityChangeListener(
                new View.OnSystemUiVisibilityChangeListener() {
                    @Override
                    public void onSystemUiVisibilityChange(int visibility) {
                        if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
                            decorView.setSystemUiVisibility(
                                    View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                                            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
                        }
                    }
                }
        );

    }
}

问题是对话框一打开，导航栏就出现了，我无法隐藏它。

private void openFullScreenDialog() {
    ((ViewGroup) mExoPlayerView.getParent()).removeView(mExoPlayerView);
    mFullScreenDialog.addContentView(mExoPlayerView, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
    mFullScreenIcon.setImageDrawable(ContextCompat.getDrawable(PlaybackActivity.this, R.drawable.ic_fullscreen_exit));
    mExoPlayerFullScreen = true;
    mFullScreenDialog.show();
    getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
    | View.SYSTEM_UI_FLAG_FULLSCREEN);
}

无论我为对话框或setSystemUiVisibility()使用什么选项，导航栏都会出现。

android

来源：https://stackoverflow.com/questions/48003250/how-to-hide-navigation-bar-when-using-full-screen-dialog

4条答案

按热度按时间

hmae6n7t1#

请执行以下操作：

decorView.setOnSystemUiVisibilityChangeListener(
        new View.OnSystemUiVisibilityChangeListener() {
            @Override
            public void onSystemUiVisibilityChange(int visibility) {
                getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
                getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);

            }
        }
);

也重写此方法：

@Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
        if (hasFocus) {
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
            getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);

        }
    }

赞(0）回复(0）举报 2022-12-25

afdcj2ne2#

隐藏系统栏onWindowFocus并在dismiss对话框时显示

class FullScreenDialog(context: Context): Dialog(context, android.R.style.Theme_Translucent_NoTitleBar_Fullscreen) {
override fun onWindowFocusChanged(hasFocus: Boolean) {
    super.onWindowFocusChanged(hasFocus)
    if(hasFocus){
        hideSystemBars()
    }
}

private fun hideSystemBars() {
    window?.let {
        val windowInsetsController =
            ViewCompat.getWindowInsetsController(it.decorView) ?: return
        windowInsetsController.systemBarsBehavior =
            WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
        // Hide both the status bar and the navigation bar
        windowInsetsController.hide(WindowInsetsCompat.Type.systemBars())
    }
}

override fun dismiss() {
    super.dismiss()
    showSystemBar()
}

private fun showSystemBar(){
    window?.let {
        val windowInsetsController =
            ViewCompat.getWindowInsetsController(it.decorView) ?: return
        windowInsetsController.show(WindowInsetsCompat.Type.systemBars())
    }
}

}

赞(0）回复(0）举报 2022-12-25

cedebl8k3#

试试这个
最佳解决方案是使用DialogFragment
显示对话框

DialogFragment.show(getSupportFragmentManager(), DialogFragment.TAG);

全屏

@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    Dialog dialog = new Dialog(getActivity(), R.style.MainDialog) { //set the style, the best code here or with me, we do not change
        @Override
        public void onBackPressed() {
            super.onBackPressed();
            getActivity().finish();
        }
    };
    return dialog;
}

风格

<style name="MainDialog" parent="@android:style/Theme.Dialog">
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">false</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:background">@null</item>
        <item name="android:windowAnimationStyle">@null</item>
    </style>

赞(0）回复(0）举报 2022-12-25

jckbn6z74#

试试这个：