我正在尝试自定义listview哪个工作正常,现在我已经使用了这个部分中的baseAdapter的customclass扩展getView方法我在imageview中应用 onclickListener 并启动新的Activity这是崩溃的app 的码
public class CustomAdapterClass extends BaseAdapter
{
ArrayList<FatwaBean> fatwaArrayList;
Context context;
CustomAdapterClass(ArrayList<FatwaBean> data,Context c) {
fatwaArrayList = data;
context = c;
}
public int getCount() {
// TODO Auto-generated method stub
return fatwaArrayList.size();
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return fatwaArrayList.get(position);
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View v = convertView;
if (v == null)
{
LayoutInflater vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.search_fatwa_row, null);
}
final ImageView image = (ImageView) v.findViewById(R.id.search_image_row);
TextView dateTextView = (TextView)v.findViewById(R.id.search_date_row);
FatwaBean fatwaBean= fatwaArrayList.get(position);
//image.setImageResource(fatwaBean.getQuestionImage());
image.setImageResource(R.drawable.app_icon);
//image.setTag(fatwaBean.getFatwaTopicQuestionId());
dateTextView.setText(fatwaBean.getFatwaDate());
Log.i("fatwaBean",""+fatwaBean.getFatwaDate());
Log.i("fatwaBean",""+fatwaBean.getFatwaImageName());
Log.i("fatwaBean Topic Question Image Name",""+fatwaBean.getQuestionImage());
image.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
final int itemname= (int)fatwaArrayList.get(position).getFatwaTopicQuestionId();
Log.i("clicked Fatwa Image Topic Id",""+fatwaArrayList.get(position).getFatwaTopicQuestionId());
Intent intent = new Intent(context,FatwaZoomActivityImageView.class);
//passing fatwa topic question Id to get FatwaImage in NextActivity
intent.putExtra("questionTopicIdForFatwa",fatwaArrayList.get(position).getFatwaTopicQuestionId());
intent.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
context.startActivity(intent);
}
});
return v;
}
logcat的:
02-19 22:02:05.220: E/AndroidRuntime(578): FATAL EXCEPTION: main
02-19 22:02:05.220: E/AndroidRuntime(578): android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
02-19 22:02:05.220: E/AndroidRuntime(578): at android.app.ContextImpl.startActivity(ContextImpl.java:803)
02-19 22:02:05.220: E/AndroidRuntime(578): at android.content.ContextWrapper.startActivity(ContextWrapper.java:276)
02-19 22:02:05.220: E/AndroidRuntime(578): at com.jamia.binoria.CustomAdapterClass$1.onClick(CustomAdapterClass.java:73)
02-19 22:02:05.220: E/AndroidRuntime(578): at android.view.View.performClick(View.java:3100)
02-19 22:02:05.220: E/AndroidRuntime(578): at android.view.View$PerformClick.run(View.java:11644)
02-19 22:02:05.220: E/AndroidRuntime(578): at android.os.Handler.handleCallback(Handler.java:587)
02-19 22:02:05.220: E/AndroidRuntime(578): at android.os.Handler.dispatchMessage(Handler.java:92)
02-19 22:02:05.220: E/AndroidRuntime(578): at android.os.Looper.loop(Looper.java:126)
02-19 22:02:05.220: E/AndroidRuntime(578): at android.app.ActivityThread.main(ActivityThread.java:3997)
02-19 22:02:05.220: E/AndroidRuntime(578): at java.lang.reflect.Method.invokeNative(Native Method)
02-19 22:02:05.220: E/AndroidRuntime(578): at java.lang.reflect.Method.invoke(Method.java:491)
02-19 22:02:05.220: E/AndroidRuntime(578): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
02-19 22:02:05.220: E/AndroidRuntime(578): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
02-19 22:02:05.220: E/AndroidRuntime(578): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分:1)
在startActivity()之前添加此项,如LogCat中所示。
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
答案 1 :(得分:0)
对我来说,logcat消息看起来非常简单:
从Activity上下文外部调用startActivity()需要FLAG_ACTIVITY_NEW_TASK标志。这真的是你想要的吗?
如果您不想使用FLAG_ACTIVITY_NEW_TASK,那么您的适配器应该回调您的主Activity或Fragment以启动下一个Activity。
由于你正在调用intent.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
,我猜你真的不想要新的任务标志,并且回调父Activity / Fragment是你最好的选择。
答案 2 :(得分:0)
也许这应该是一个评论,但它有点长,所以......
context.startActivity(intent);
Context有一个StartActivity方法,Activity也有。您的context
变量是Context类型,它指向一个Activity对象,但我不知道被调用的方法是属于Context还是属于Activity对象。
也许你可以尝试用Context context
??
Activity parentActivity
答案 3 :(得分:0)
您传递给Context
构造函数的CustomAdapterClass
不是Activity
上下文,但有些不同,可能是Application
。因此例外。请阅读this article以获取更多解释,了解不同Context
的优势。
两种解决方案:
传入Activity
上下文。这应该是首选方案。
按照其他一些答案的建议添加FLAG_ACTIVITY_NEW_TASK
。请注意,这样做会影响活动后退堆栈导航的工作方式,而且不一定是您想要的。