键盘弹出不顶a

因为在全屏模式下   是不好使的

需要在activity    setContentView(R.layout.XXXX)之后调用;

AndroidBug5497Workaround.assistActivity(this);

importandroid.app.Activity;

importandroid.graphics.Rect;

importandroid.view.View;

importandroid.view.ViewTreeObserver;

importandroid.widget.FrameLayout;

public classAndroidBug5497Workaround {

// 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 voidassistActivity(Activity activity) {

newAndroidBug5497Workaround(activity);

}

privateViewmChildOfContent;

private intusableHeightPrevious;

privateFrameLayout.LayoutParamsframeLayoutParams;

privateAndroidBug5497Workaround(finalActivity activity) {

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

mChildOfContent= content.getChildAt(0);

mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(newViewTreeObserver.OnGlobalLayoutListener() {

public voidonGlobalLayout() {

possiblyResizeChildOfContent(activity);

}

});

frameLayoutParams= (FrameLayout.LayoutParams)mChildOfContent.getLayoutParams();

}

private voidpossiblyResizeChildOfContent(Activity activity) {

intusableHeightNow = computeUsableHeight(activity);

if(usableHeightNow !=usableHeightPrevious) {

intusableHeightSansKeyboard =mChildOfContent.getRootView().getHeight();

intheightDifference = 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 intcomputeUsableHeight(Activity activity) {

Rect r =newRect();

mChildOfContent.getWindowVisibleDisplayFrame(r);

if(r.top==0){

r.top=getStatusBarHeight(activity);//状态栏目的高度

}

return(r.bottom- r.top);

}

public intgetStatusBarHeight(Activity activity) {

intresult =0;

intresourceId = activity.getResources().getIdentifier("status_bar_height","dimen","android");

if(resourceId >0) {

result = activity.getResources().getDimensionPixelSize(resourceId);

}

returnresult;

}

}