Android Cordova 對於軟鍵盤彈出后覆蓋輸入域的解決

　　Android平台4.2.2與Cordova2.2.0結合使用后出現軟鍵盤彈出后，覆蓋輸入域問題，在Android的4.0.3中測試沒有這樣的問題，設置AndroidManifest.xml中的activity的android:windowSoftInputMode="adjustPan"不起作用，通過google發現者可能是android的一個bug或者是cordova的bug。。。

借鑒了網上的一種寫法

代碼如下：

package com.siro.androidwebviewos.utils;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Rect;
import android.util.Log;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.FrameLayout;

import com.siro.androidwebviewos.action.OpenNewActivity;
@SuppressLint("NewApi")
public class AndroidBug5497Workaround {

public static void assistActivity (OpenNewActivity activity) {
new AndroidBug5497Workaround(activity);
}

private View rootView ;
private int mLastHeightDifferece ;

private AndroidBug5497Workaround(Activity activity) {


rootView = activity.findViewById(android.R.id.content);

rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
public void onGlobalLayout() {
checkHeightDifference();
}
});
}

private void checkHeightDifference(){
// get screen frame rectangle
Rect r = new Rect();
rootView.getWindowVisibleDisplayFrame(r);
int screenHeight = rootView.getRootView().getHeight();
int heightDifference = screenHeight - (r.bottom - r.top);
if (heightDifference > screenHeight/3 && heightDifference != mLastHeightDifferece) {
rootView.getLayoutParams().height = screenHeight - heightDifference;
rootView.requestLayout();
mLastHeightDifferece = heightDifference;
} else if (heightDifference != mLastHeightDifferece) {
rootView.getLayoutParams().height = screenHeight;
rootView.requestLayout();
mLastHeightDifferece = heightDifference;
}
}

}

activity中調用：

在loadUrl后調用

AndroidBug5497Workaround.assistActivity(this);

效果不理想，雖然有屏幕上推的效果，但是，輸入域還是被覆蓋。

經過同事提醒改變了一下寫法，效果還可以。

public class OpenNewActivity  extends DroidGap implements OnTouchListener 實現OnTouchListener 

重寫onTouch方法，主要獲取getRawY

@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
eventX = event.getRawX() ;
eventY = event.getRawY() ;
}
return false;
}

oncreate方法的loadUrl之后增加對rootView的監聽：

　　　rootView = this.findViewById(android.R.id.content);

    rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

            public void onGlobalLayout() {

            checkHeightDifference();

            }

        });

通過當前屏幕高度，彈出后的軟鍵盤高度及所點擊輸入域的RawY。計算rootView的位移量，並且requestLayout();

 @SuppressLint("NewApi")

private void checkHeightDifference(){

        Rect r = new Rect();

        rootView.getWindowVisibleDisplayFrame(r);

        int screenHeight = rootView.getRootView().getHeight();

        int heightDifference = screenHeight - (r.bottom - r.top);

        if (heightDifference > screenHeight/3 && heightDifference != mLastHeightDifferece) {

        rootView.setTranslationY(- (heightDifference - ( screenHeight - eventY)+20));

            rootView.requestLayout();

            mLastHeightDifferece = heightDifference;

        } else if (heightDifference != mLastHeightDifferece) {

        rootView.setTranslationY(heightDifference);

            rootView.requestLayout();

            mLastHeightDifferece = heightDifference;

        }

}

onTouch