码迷,mamicode.com
首页 > 移动开发 > 详细

Android adjustresize全屏无效问题

时间:2015-10-16 16:55:53      阅读:235      评论:0      收藏:0      [点我收藏+]

标签:

屏模式下,即使将activity的windowSoftInputMode的属性设置为:adjustResize,在键盘显示时它未将Activity的Screen向上推动,所以你Activity的view的根树的尺寸是没有变化的。在这种情况下,你也就无法得知键盘的尺寸,对根view的作相应的推移。全屏下的键盘无法Resize的问题从2.1就已经存在了,直到现在google还未给予解决。
可通过下面类解决这个问题:
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 View mChildOfContent;
    private int usableHeightPrevious;
    private FrameLayout.LayoutParams frameLayoutParams;

    private AndroidBug5497Workaround(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();
        if (usableHeightNow != usableHeightPrevious) {
            int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();
            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 r = new Rect();
        mChildOfContent.getWindowVisibleDisplayFrame(r);
        return (r.bottom - r.top);
    }

}
使用方法:

在你的Activity的oncreate()方法里调用AndroidBug5497Workaround.assistActivity(this);即可。注意:在setContentView(R.layout.xxx)之后调用。

Android adjustresize全屏无效问题

标签:

原文地址:http://www.cnblogs.com/netcorner/p/4885624.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!