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：

package com.sswl.sdk.utils;import android.app.Activity;import android.graphics.Rect;import android.os.Build.VERSION;import android.os.Build.VERSION_CODES;import android.util.Log;import android.view.View;import android.view.ViewGroup;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();  后调用 AndroidBug5497Workaround.assistActivity(this); * * @author Administrator */public class AndroidBug5497Workaround {    /**     * 适用于调整activity内的布局大小     */    public static void assistActivity(Activity activity) {        new AndroidBug5497Workaround(activity);    }    /**     * 适用于调整popuwindow/dialog布局大小     *     * @param activity     * @param contentView     */    public static void assistActivity(Activity activity, ViewGroup contentView) {        new AndroidBug5497Workaround(activity, contentView);    }    private Activity activity;    private View mChildOfContent;    private int usableHeightPrevious;    private ViewGroup.LayoutParams frameLayoutParams;    private boolean isRootContentView = false;    //适用于调整activity内的布局大小    private AndroidBug5497Workaround(Activity activity) {        this.activity = activity;        isRootContentView = false;        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);        //获取当前界面的根布局        mChildOfContent = content.getChildAt(0);        if (mChildOfContent == null) {            mChildOfContent = (FrameLayout) activity.findViewById(android.R.id.content);        }        //在根布局增加布局变化的监听        mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {            public void onGlobalLayout() {                possiblyResizeChildOfContent();            }        });        frameLayoutParams = (ViewGroup.LayoutParams) mChildOfContent.getLayoutParams();    }    //适用于调整popuwindow/dialog布局大小    private AndroidBug5497Workaround(Activity activity, ViewGroup contentView) {        this.activity = activity;        isRootContentView = true;        //获取当前界面的根布局        mChildOfContent = contentView;        //在根布局增加布局变化的监听        mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {            public void onGlobalLayout() {                possiblyResizeChildOfContent();            }        });        frameLayoutParams = (ViewGroup.LayoutParams) mChildOfContent.getLayoutParams();    }    private void possiblyResizeChildOfContent() {        //可见的高度        int usableHeightNow = computeUsableHeight();        if (usableHeightNow != usableHeightPrevious) {            //根布局的高度            int rootViewHeight = 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;                rootViewHeight -= statusBarHeight;            }            int heightDifference = Math.abs(rootViewHeight - usableHeightNow);            //当前可见区域大小不足根布局大小的5/6时，认为是软键盘弹出            if (heightDifference > (rootViewHeight /6)) {//                Log.e("min77","computeUsableHeight heightDifference > rootViewHeight / 6");                // keyboard probably just became visible                frameLayoutParams.height = usableHeightNow;            } else {                // keyboard probably just became hidden                frameLayoutParams.height = rootViewHeight;            }            //更新布局大小            mChildOfContent.setLayoutParams(frameLayoutParams);            mChildOfContent.requestLayout();            Log.i("min77", "computeUsableHeight 刷新 rootViewHeight = "+rootViewHeight+" ,frameLayoutParams.height = " + frameLayoutParams.height + " , usableHeightPrevious = " + usableHeightPrevious);            usableHeightPrevious = usableHeightNow;        }    }    /**     * 计算当前界面可见的高度     */    private int computeUsableHeight() {        Rect frame = new Rect();        mChildOfContent.getWindowVisibleDisplayFrame(frame);        Log.i("min77", "computeUsableHeight  = " + (frame.bottom - frame.top));        return (frame.bottom - frame.top);    }}

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

AndroidBug5497Workaround.assistActivity(this);

或者在popuwindow show之后加入以下代码：

 //这个必须设置，否则无法将布局顶上去AndroidBug5497Workaround.assistActivity(mActivityRef.get(),mContentView);

`【高能提醒】`

假如上述代码显示软键盘弹出时候，没有看到布局大小有变化，即没有调用到possiblyResizeChildOfContent();，那么有可能是你AndroidManifest.xml的activity设置了 android:windowSoftInputMode="adjustResize"，需要去掉android:windowSoftInputMode才生效

`【高能提醒】`

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