在ViewTreeObserver--removeOnGlobalLayoutListener（）在Android4.2以下设备崩溃的问题及解决方案

[gxj0116]

原来代码：
recyclerView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
@OverRide
public void onGlobalLayout() {
recyclerView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
int recyclerviewHeight = recyclerView.getHeight();
resizeHeight(recyclerviewHeight);
}
}); 以上代码在Android4.2以下Android设备会崩溃，建议修改为以下代码：recyclerView.getViewTreeObserver().addOnGlobalLayoutListener(newViewTreeObserver.OnGlobalLayoutListener() { @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN) @Override public void onGlobalLayout() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) { recyclerView.getViewTreeObserver().removeOnGlobalLayoutListener(this); } else { recyclerView.getViewTreeObserver().removeGlobalOnLayoutListener(this); } int recyclerviewHeight = recyclerView.getHeight(); resizeHeight(recyclerviewHeight); } });