android 显示内容被底部导航栏遮挡

最新推荐文章于 2025-10-11 15:19:17 发布

原创最新推荐文章于 2025-10-11 15:19:17 发布 · 9.3k 阅读

2 ·

CC 4.0 BY-SA版权

文章标签：

#底部菜单栏遮挡 #软键盘 #全屏显示

android工作心得专栏收录该内容

18 篇文章

订阅专栏

本文介绍了一种解决Android应用中EditText界面全屏显示时底部导航栏遮挡问题的方法。通过在style.xml中配置特定参数，使界面适配不同设备，并提供了一个辅助类AndroidBug5497Workaround来解决软键盘弹出时布局调整的问题。

描述：

由于产品需求，要求含有EditText的界面全屏显示，最好的解决方式是使用AndroidBug5497Workaround.assistActivity(this)
的方式来解决，但是华为和魅族手机系统自带的有底部导航栏，会造成一些布局被遮挡。

编辑此区域

解决方案：在values-21的style.xml中添加android:windowDrawsSystemBarBackgrounds”并将值设置为false，方式如下

在style引用的主题里面加入android:windowDrawsSystemBarBackgrounds”并将值设置为false，会自动提醒点击alt+Enter会新建values-21的文件夹并生成styles.xml的文件。
也可以自己忽略的，直接新建values-21的文件夹然后新建一个styles.xml的文件，将主题里面的内容复制到styles.xml里面然后加上加入android:windowDrawsSystemBarBackgrounds”并将值设置为false即可解决。

例外：附上（网上找到的）

public class AndroidBug5497Workaround {

    // For more information, see https://code.google.com/p/android/issues/detail?id=5497
    // To use this class, simply invoke assistActivity() on an Activity that already has its content 

view set.

    public static void assistActivity (Activity activity) {
        new AndroidBug5497Workaround(activity);
    }
    private Activity activity;
    private View mChildOfContent;
    private int usableHeightPrevious;
    private FrameLayout.LayoutParams frameLayoutParams;

    private AndroidBug5497Workaround(Activity activity) {
        this.activity = activity;
        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
        mChildOfContent = content.getChildAt(0);
        mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new 

ViewTreeObserver.OnGlobalLayoutListener() {
            public void onGlobalLayout() {
                possiblyResizeChildOfContent();
            }
        });
        frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
    }

    private void possiblyResizeChildOfContent() {
        int usableHeightNow = computeUsableHeight();
        LogUtils.e("possiblyResizeChildOfContent","usableHeightNow:"+usableHeightNow);
        LogUtils.e("possiblyResizeChildOfContent","usableHeightPrevious:"+usableHeightPrevious);
        if (usableHeightNow != usableHeightPrevious) {
            int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();

            //这个判断是为了解决19之前的版本不支持沉浸式状态栏导致布局显示不完全的问题
            if(Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT){
                Rect frame = new Rect();
                activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
                int statusBarHeight = frame.top;
                usableHeightSansKeyboard -= statusBarHeight;
            }
            int heightDifference = usableHeightSansKeyboard - usableHeightNow;
            if (heightDifference > (usableHeightSansKeyboard/4)) {
                // keyboard probably just became visible
                frameLayoutParams.height = usableHeightSansKeyboard - heightDifference;
            } else {
                // keyboard probably just became hidden
                frameLayoutParams.height = usableHeightSansKeyboard;
            }
            mChildOfContent.requestLayout();
            usableHeightPrevious = usableHeightNow;
        }
    }

    private int computeUsableHeight() {
        Rect frame = new Rect();
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
        int statusBarHeight = frame.top;

        Rect r = new Rect();
        mChildOfContent.getWindowVisibleDisplayFrame(r);

        //这个判断是为了解决19之后的版本在弹出软键盘时，键盘和推上去的布局（adjustResize）之间有黑色区域

的问题
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){
            return (r.bottom - r.top)+statusBarHeight;
        }

        return (r.bottom - r.top);
    }

}