我有一個ViewPager,它是一個彈出窗口的一部分。當我第一次打開一個彈出窗口時,一切正常,但是當我第二次用相同的數據打開它時,我有一個IllegalStateException錯誤。在Android中使用ViewPager時發生java.lang.IllegalStateException
這裏是一個堆棧跟蹤:
04-08 15:17:48.370:E/AndroidRuntime(10929):致命異常:主 04-08 15:17:48.370:E/AndroidRuntime( 10929): java.lang.IllegalStateException:指定的子項已具有 父級。您必須先調用子對象的父對象的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):在 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.instantia teItem(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):在.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.View.Group.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.ViewDisplayList(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):在 android.view.ViewRootImpl.draw(ViewRootImpl.java:1910)04-08 15:17:48.370: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)04-08 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) ): 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(合子Init.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):在 dalvik.system.NativeStart.main(本機方法)
這裏是我的代碼:
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);
}
這裏是我的適配器代碼:
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);
}
}
任何想法?
嘗試這樣'@覆蓋 公共布爾isViewFromObject(查看視圖,Object對象){返回查看==((查看)對象);}'在你的'SamplePagerAdapter' –
@SimplePlan仍然不起作用 –