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POhow to get a list item position by clicking the button inside it?
 

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  1. POhow to get a list item position by clicking the button inside it?
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    <p>actually I've read some previous questions about this...</p> <p>this is the code that I use</p> <pre><code>auto = (ListView)findViewById(R.id.auto); String[] projection = new String[] {Browser.BookmarkColumns._ID,Browser.BookmarkColumns.TITLE,Browser.BookmarkColumns.URL}; String[] displayFields = new String[] {Browser.BookmarkColumns.TITLE, Browser.BookmarkColumns.URL}; int[] displayViews = new int[] { R.id.text1,R.id.text2 }; Cursor cur = managedQuery(android.provider.Browser.BOOKMARKS_URI,projection, null, null, null); //auto.setAdapter(new SimpleCursorAdapter(this, R.layout.mylist, cur,displayFields, displayViews)); myAdapter apt = new myAdapter(this, R.layout.mylist, cur,displayFields, displayViews); auto.setAdapter(apt); </code></pre> <p>and class myAdapter</p> <pre><code>class myAdapter extends SimpleCursorAdapter{ private Cursor c; private Context context; public myAdapter(Context context, int layout, Cursor c, String[] from, int[] to) { super(context, layout, c, from, to); // TODO Auto-generated constructor stub this.c = c; this.context = context; AutoList att = new AutoList(); mListView = att.auto; } @Override public View getView(int pos, View inView, ViewGroup parent) { View vix = inView; if (vix == null) { LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); vix = inflater.inflate(R.layout.mylist, null); } this.c.moveToPosition(pos); String title = this.c.getString(this.c.getColumnIndex(Browser.BookmarkColumns.TITLE)); String cont = this.c.getString(this.c.getColumnIndex(Browser.BookmarkColumns.URL)); TextView text1 = (TextView) vix.findViewById(R.id.text1); text1.setText(title); TextView text2 = (TextView) vix.findViewById(R.id.text2); text2.setText(cont); Button butt = (Button) vix.findViewById(R.id.button); butt.setOnClickListener(mButt); return vix; } private OnClickListener mButt = new OnClickListener() { @Override public void onClick(View v) { final int position = mListView.getPositionForView((View) v.getParent()); Log.v("BUTT", "Title clicked, row "+position); } }; </code></pre> <p>However, when I click the button, I still get a lot of errors like this:</p> <pre><code>04-10 22:30:55.152: ERROR/AndroidRuntime(695): FATAL EXCEPTION: main 04-10 22:30:55.152: ERROR/AndroidRuntime(695): java.lang.NullPointerException 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at com.auto2.AutoList$myAdapter$1.onClick(AutoList.java:113) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at android.view.View.performClick(View.java:2408) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at android.view.View$PerformClick.run(View.java:8816) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at android.os.Handler.handleCallback(Handler.java:587) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at android.os.Handler.dispatchMessage(Handler.java:92) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at android.os.Looper.loop(Looper.java:123) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at android.app.ActivityThread.main(ActivityThread.java:4627) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at java.lang.reflect.Method.invokeNative(Native Method) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at java.lang.reflect.Method.invoke(Method.java:521) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 04-10 22:30:55.152: ERROR/AndroidRuntime(695): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>That's it! I hope it won't be so difficult to be figured out!</p> <p>Thanks!</p>
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