我有一个ViewPager,它是弹出窗口的一部分。当我第一次打开一个弹出窗口时,一切都运行良好,但是当我第二次使用相同的数据打开它时,我有一个IllegalStateException错误。
这是一个堆栈跟踪:
04-08 15:17:48.370:E / AndroidRuntime(10929):致命异常:主要 04-08 15:17:48.370:E / AndroidRuntime(10929): java.lang.IllegalStateException:指定的子节点已经有了 家长。您必须首先在孩子的父母上调用removeView()。 04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewGroup.addViewInner(ViewGroup.java:3337)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewGroup.addView(ViewGroup.java:3208)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.support.v4.view.ViewPager.addView(ViewPager.java:920)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewGroup.addView(ViewGroup.java:3165)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewGroup.addView(ViewGroup.java:3145)04-08 15:17:48.370:E / AndroidRuntime(10929):at com.componentix.imwizard.SamplePagerAdapter.instantiateItem(SamplePagerAdapter.java:22) 04-08 15:17:48.370:E / AndroidRuntime(10929):at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:649)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.support.v4.view.ViewPager.populate(ViewPager.java:783)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.support.v4.view.ViewPager.completeScroll(ViewPager.java:1280) 04-08 15:17:48.370:E / AndroidRuntime(10929):at android.support.v4.view.ViewPager.computeScroll(ViewPager.java:1176) 04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewGroup.drawChild(ViewGroup.java:2729)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.View.buildDrawingCache(View.java:10693)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewGroup.drawChild(ViewGroup.java:2747)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2489)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.View.draw(View.java:10981)04-08 15:17:48.370: E / AndroidRuntime(10929):at android.view.View.getDisplayList(View.java:10417)04-08 15:17:48.370: E / AndroidRuntime(10929):at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:2597) 04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.View.getDisplayList(View.java:10380)04-08 15:17:48.370: E / AndroidRuntime(10929):at android.view.HardwareRenderer $ GlRenderer.draw(HardwareRenderer.java:842) 04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewRootImpl.draw(ViewRootImpl.java:1910)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1634) 04-08 15:17:48.370:E / AndroidRuntime(10929):at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.os.Handler.dispatchMessage(Handler.java:99)04-08 15:17:48.370:E / AndroidRuntime(10929):at android.os.Looper.loop(Looper.java:137)04-08 15:17:48.370: E / AndroidRuntime(10929):at android.app.ActivityThread.main(ActivityThread.java:4430)04-08 15:17:48.370:E / AndroidRuntime(10929):at java.lang.reflect.Method.invokeNative(Native Method)04-08 15:17:48.370:E / AndroidRuntime(10929):at java.lang.reflect.Method.invoke(Method.java:511)04-08 15:17:48.370: E / AndroidRuntime(10929):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:792) 04-08 15:17:48.370:E / AndroidRuntime(10929):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:559)04-08 15:17:48.370:E / AndroidRuntime(10929):at dalvik.system.NativeStart.main(原生方法)
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);
}
这是我的适配器的代码:
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?
答案 0 :(得分:3)
问题在于你的适配器方法instantiateItem
你打电话给container.addView(v);
但每个View
只能有一个父级,
所以它只能通过addView(...)
添加到容器一次。
第一次打开弹出窗口时,一切正常,因为v
那个时间没有父母。但是当你第二次打开popupwinow时,
它再次将视图添加到容器中。这可以解决错误。
如果关闭弹出视图或从中删除所有子视图,请尝试销毁视图
container.removeAllViews()
它应该适用。
答案 1 :(得分:2)
问题是第二次在container.addView(v)中添加View v时。
我发现解决方案添加了这个:
if(v.getParent()!=null)
((ViewGroup)v.getParent()).removeView(v);
在container.addView(v)之前