android webview在弹出软键盘时，布局没有上移的解决办法

1、新建类AndroidBug5497Workaround：

import android.app.Activity;
import android.graphics.Rect;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.FrameLayout;

/**
 * 用于修复Android 5497BUG，即adjustResize与全屏不能共存
 * 
 * 使用方法:  setContentView("min77_xxx"));  后调用 AndroidBug5497Workaround.assistActivity(this);
 * @author Administrator
 *
 */
public class AndroidBug5497Workaround {

    // For min77_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();
        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(VERSION.SDK_INT < 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(VERSION.SDK_INT >= VERSION_CODES.KITKAT){
            return (r.bottom - r.top)+statusBarHeight;
        }

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

}

2、在嵌有webview的activity的setContentView之前加以下代码即可解决：

AndroidBug5497Workaround.assistActivity(this);