问题
I have adapter class for Listview that is inside a class which is name AdapterItems that extended in ArrayAdapter.
know how can I use progress dialog in this class that isn't extended in Activity?
this is my fill method for listview
public void fill(final ArrayAdapter<RssParser.Item> adapter, final RssParser.Item item, final int position)
{
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
ActivityStartup.handler.post(new Runnable() {
@Override
public void run() {
ActivityStartup.dismissLoadingDialog();
txtTitle.setText(item.title);
txtDate.setText(item.pubDate);
txt_time.setText(item.time);
txtDescription.setText(item.description);
layoutRoot.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (progress == null) {
progress = new ProgressDialog(v.getContext());
progress.setTitle("title");
progress.setMessage("loading");
}
progress.show();
G.SelectedApplication = item;
Intent intent = new Intent(G.context, Adapter_Description.class)
.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra("INPUT", item.link + "");
intent.putExtra("INPUT_DESC", item.description + "");
G.context.startActivity(intent);
}
});
}
});
}
});
thread.start();
}
}
when I clicked on the items on the list view to see the dialog I got a crash and this is my Log
09-06 12:04:10.368: E/AndroidRuntime(5112): FATAL EXCEPTION: main 09-06 12:04:10.368: E/AndroidRuntime(5112): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.view.ViewRootImpl.setView(ViewRootImpl.java:571) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:246) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.app.Dialog.show(Dialog.java:281) 09-06 12:04:10.368: E/AndroidRuntime(5112): at com.myApp.course.app.feed_reader.AdapterItems$ViewHolder$1$1$1.onClick(AdapterItems.java:71) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.view.View.performClick(View.java:4204) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.view.View$PerformClick.run(View.java:17355) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.os.Handler.handleCallback(Handler.java:725) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.os.Handler.dispatchMessage(Handler.java:92) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.os.Looper.loop(Looper.java:137) 09-06 12:04:10.368: E/AndroidRuntime(5112): at android.app.ActivityThread.main(ActivityThread.java:5041) 09-06 12:04:10.368: E/AndroidRuntime(5112): at java.lang.reflect.Method.invokeNative(Native Method) 09-06 12:04:10.368: E/AndroidRuntime(5112): at java.lang.reflect.Method.invoke(Method.java:511) 09-06 12:04:10.368: E/AndroidRuntime(5112): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 09-06 12:04:10.368: E/AndroidRuntime(5112): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 09-06 12:04:10.368: E/AndroidRuntime(5112): at dalvik.system.NativeStart.main(Native Method) 09-06 12:04:36.292: E/InputDispatcher(467): channel 'a69034a0 com.myApp.course.app.feed_reader/com.myApp.course.app.feed_reader.ActivityStartup (server)' ~ Channel is unrecoverably broken and will be disposed!
回答1:
Just pass the Activity Context to the Constructor of your non_activity class , then use that context to show your ProgressDialog
private Activity activityContext;
Public YourClassName(Activity activityContext)
{
this.activityContext = activityContext;
}
then use this Context to initialize a ProgressDialog :
progressDialog = new ProgressDialog(activityContext);
回答2:
You have to pass
Activity Context
to your non activity class. And then use that context to display Dialog
来源：https://stackoverflow.com/questions/25698117/how-to-show-progress-dialog-in-non-activity-class-inside-list-view