我有一个ViewPager，它是弹出窗口的一部分。当我第一次打开弹出窗口时，一切都很好，但当我用相同的数据第二次打开它时，我出现了IllegalStateException错误。
这是一个堆栈跟踪：
04-08 15:17:48.370:E/AndroidRuntime(10929(：致命异常：main04-08 15:17:48.370:E/AndroidRuntime(10929(：java.lang.IollegalStateException：指定的子级已经具有父母亲必须首先对子级的父级调用removeView((。2008年4月15:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.addViewInner(ViewGroup.java：3337(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.addView(ViewGroup.java：3208(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.support.v4.view.ViewPager.addView(ViewPager.java:920(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.addView(ViewGroup.java：3165(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.addView(ViewGroup.java：3145(04-0815:17:48.370:E/AndroidRuntime(10929(：在com.componentix.imgwizard.SamplePagerAdapter.instantiateItem(SamplePagerAdaper.java:22(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.support.v4.view.ViewPager.addNewItem(ViewPager.java:649(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.support.v4.view.ViewPager.populate(ViewPager.java:783(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.support.v4.view.ViewPager.completeScroll(ViewPager.java:1280(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.support.v4.view.ViewPager.computeScroll(ViewPager.java:1176(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.drawChild(ViewGroup.java：2729(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.dispatchDraw(ViewGroup.java：2489(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.view.buildDrawingCache(view.java：10693(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.drawChild(ViewGroup.java：2747(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.dispatchDraw(ViewGroup.java：2489(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.view.draw(view.java:10981(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.view.view.getDisplayList(view.java:10417(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java：2597(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.view.view.getDisplayList(view.java：10380(04-08 15:17:48.370：E/AndroidRuntime(10929(：在android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:842(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewRootImpl.draw(ViewRootImpl.java:1910(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1634(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.os.Handler.dispatchMessage(Handler.java:99(04-0815:17:48.370:E/AndroidRuntime(10929(：在android.os.Looper.loop(Looper.java:137(04-08 15:17:48.370:E/AndroidRuntime(10929(：在android.app.ActivityThread.main(ActivityThreads.java:4430(04-0815:17:48.370:E/AndroidRuntime(10929(：在java.lang.reflect.Method.invokeNative(本机方法(04-0815:17:48.370:E/AndroidRuntime(10929(：在java.lang.reflect.Method.ioke(Method.java:511(04-08 15:17:48.370:E/AndroidRuntime(10929(：在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792(04-08 15:17:48.370:E/AndroidRuntime(10929(：在com.android.internal.os.ZygoteInit.main(ZygoteNit.java:559(04-0815:17:48.370:E/AndroidRuntime(10929(：在dalvik.system.NativeStart.main(本地方法(
这是我的代码：
public void showPopupWindow(Drawable picture)
{
int imageResource = R.drawable.background;
Drawable image = getResources().getDrawable(imageResource);
popupLayout = new LinearLayout(context);
popupLayout.setOrientation(LinearLayout.VERTICAL);
popupLayout.setBackgroundResource(R.drawable.background);
LayoutInflater ltInflater = getLayoutInflater();
RelativeLayout rl = (RelativeLayout)ltInflater.inflate(R.layout.viewpager_layout, null);
PagerContainer pagerContainer = (PagerContainer)(rl.getChildAt(0));
CirclePageIndicator circlePageIndicator = (CirclePageIndicator)(rl.getChildAt(1));
Button button = (Button)(rl.getChildAt(2));
int maxWidth = 1;
int maxHeight = 1;
for (Drawable drawable: bigImages) {
Bitmap bmp = drawableToBitmap(drawable);
maxWidth = Math.max(maxWidth, bmp.getWidth());
maxHeight = Math.max(maxHeight, bmp.getHeight());
}
ViewPager viewPager = pagerContainer.getViewPager();
//viewPager.setBackgroundDrawable(image);
ArrayList<ImageView> tmpImageViewsWithScreenshots = (ArrayList<ImageView>) imageViewsWithScreenshots.clone();
SamplePagerAdapter pagerAdapter = new SamplePagerAdapter(tmpImageViewsWithScreenshots);
viewPager.setAdapter(pagerAdapter);
viewPager.setCurrentItem(imageIndex);
circlePageIndicator.setViewPager(viewPager);
circlePageIndicator.setCurrentItem(imageIndex);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int childCount = checkboxLayout.getChildCount();
for (int i = 0; i < childCount; ++i) {
RelativeLayout currentLayout = (RelativeLayout) checkboxLayout
.getChildAt(i);
int innerChildCount = currentLayout
.getChildCount();
for (int j = 0; j < innerChildCount; ++j) {
View view = currentLayout.getChildAt(j);
view.setEnabled(true);
}
}
imageViewLayout.setEnabled(true);
lockableScrollView.setmScrollable(true);
back.setEnabled(true);
next.setEnabled(true);
popupWindow.dismiss();
}
});
popupLayout.addView(rl);
LinearLayout.LayoutParams nlp= new LinearLayout.LayoutParams(450, 600);
rl.setLayoutParams(nlp);
popupWindow = new PopupWindow(popupLayout,
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
int childCount = checkboxLayout.getChildCount();
for (int i = 0; i < childCount; ++i) {
RelativeLayout currentLayout = (RelativeLayout) checkboxLayout
.getChildAt(i);
int innerChildCount = currentLayout.getChildCount();
for (int j = 0; j < innerChildCount; ++j) {
View view = currentLayout.getChildAt(j);
view.setEnabled(false);
}
}
next.setEnabled(false);
back.setEnabled(false);
imageViewLayout.setEnabled(false);
lockableScrollView.setmScrollable(false);
popupWindow
.showAtLocation(mainLayout, Gravity.CENTER, 0, 0);
}
这是我的适配器代码：
public class SamplePagerAdapter extends PagerAdapter{
List<ImageView> pages = null;
public SamplePagerAdapter(List<ImageView> pages){
this.pages = pages;
}
@Override
public Object instantiateItem(ViewGroup container, int position){
View v = pages.get(position);
//((ViewPager) collection).addView(v, 0);
container.addView(v);
return v;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object){
container.removeView((View)object);
}
@Override
public int getCount(){
return pages.size();
}
@Override
public boolean isViewFromObject(View view, Object object){
return view.equals(object);
}
}
有什么想法吗？
问题在于适配器方法instantiateItem
您呼叫container.addView(v);
但每个View只能有一个父级，
因此它只能通过CCD_ 4被添加到一个容器中一次。
当您第一次打开弹出窗口时，一切正常，因为v
那时没有父母。但是当你第二次打开pop逆风时，
它将视图再次添加到容器中。这就纠正了错误。
如果使用
关闭弹出视图或从中删除所有子视图，请尝试销毁该视图container.removeAllViews()
那应该行得通。
问题是当您第二次在container.addView(v(中添加View v时。
我找到了添加以下内容的解决方案：
if(v.getParent()!=null)
((ViewGroup)v.getParent()).removeView(v);
容器之前。addView(v(