Android Dialog顶部显示+横向全屏+沉浸式效果

1、代码

public class TopNotifyDialog extends Dialog {
    private Context context;

    public TopNotifyDialog(@NonNull Context context) {
        this(context, R.style.top_notify_dialog_style);
    }

    public TopNotifyDialog(@NonNull Context context, int themeResId) {
        super(context, themeResId);
        this.context = context;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.top_notify_dialog_layout);
        setDialogTheme();
    }

    //dialog属性设置
    private void setDialogTheme() {
        //设置布局顶部显示
        getWindow().setGravity(Gravity.TOP);
        //设置背景透明后设置该属性，可去除dialog边框
        getWindow().setBackgroundDrawable(new ColorDrawable());
        //设置横向铺满全屏
        getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
        //设置dialog沉浸式效果
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,               WindowManager.LayoutParams.FLAG_FULLSCREEN);
        } else {
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION, WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
        }
    }
}

2、样式

<style name="top_notify_dialog_style" parent="Theme.AppCompat.Dialog">
    <item name="android:windowIsTranslucent">true</item>
    <!--设置背景透明-->
    <item name="android:colorBackground">@android:color/transparent</item>
    <!--设置dialog浮与activity上面-->
    <item name="android:windowIsFloating">true</item>
    <!--去掉背景模糊效果-->
    <item name="android:backgroundDimEnabled">false</item>
    <item name="android:windowNoTitle">true</item>
    <!--去掉边框-->
    <item name="android:windowFrame">@null</item>
    <item name="android:windowEnterAnimation">@anim/slide_down_from_top</item>
    <item name="android:windowExitAnimation">@anim/slide_up_to_top</item>
</style>

3、效果