Android应用源码之34.ListView控件学习.zip项目安卓应用源码下载

package com.szy.listview; import android.app.Activity; import android.content.Context; import android.database.Cursor; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.ImageView; import android.widget.ListView; import android.widget.SimpleCursorAdapter; import android.widget.TextView; import android.widget.Toast; import android.widget.AdapterView.OnItemClickListener; import com.szy.listview.dao.PersonDAO; /** * @author coolszy * @blog http://blog.csdn.net/coolszy */ public class PersonActivity extends Activity { ListView lvPerson; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.person); PersonDAO personDAO = new PersonDAO(this); Cursor cursor = personDAO.getPersons(); lvPerson = (ListView) findViewById(R.id.lvPerson); // SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.person_item, cursor, new String[] SimpleCursorAdapter adapter = new PersonAdapter(this, R.layout.person_item, cursor, new String[]{ "_id", "pname", "pgender" }, new int[]{ R.id.tvPid, R.id.tvPname, R.id.ivPgender }); lvPerson.setAdapter(adapter); lvPerson.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Cursor cursor = (Cursor) parent.getItemAtPosition(position); Toast.makeText(PersonActivity.this, cursor.getString(1), Toast.LENGTH_SHORT).show(); } }); } } class PersonAdapter extends SimpleCursorAdapter { private Cursor mCursor; protected int[] mFrom; protected int[] mTo; private ViewBinder mViewBinder; public PersonAdapter(Context context, int layout, Cursor c, String[] from, int[] to) { super(context, layout, c, from, to); mCursor = c; mTo = to; findColumns(from); } @Override public void bindView(View view, Context context, Cursor cursor) { final ViewBinder binder = mViewBinder; final int count = mTo.length; final int[] from = mFrom; final int[] to = mTo; for (int i = 0; i < count; i++) { final View v = view.findViewById(to[i]); if (v != null) { boolean bound = false; if (binder != null) { bound = binder.setViewValue(v, cursor, from[i]); } if (!bound) { String text = cursor.getString(from[i]); if (text == null) { text = ""; } if (v instanceof TextView) { setViewText((TextView) v, text); } else if (v instanceof ImageView) { if (text.equals("男")) { setViewImage((ImageView) v, String.valueOf(R.drawable.boy)); } else { setViewImage((ImageView) v, String.valueOf(R.drawable.girl)); } } else { throw new IllegalStateException(v.getClass().getName() + " is not a " + " view that can be bounds by this SimpleCursorAdapter"); } } } } } private void findColumns(String[] from) { if (mCursor != null) { int i; int count = from.length; if (mFrom == null || mFrom.length != count) { mFrom = new int[count]; } for (i = 0; i < count; i++) { mFrom[i] = mCursor.getColumnIndexOrThrow(from[i]); } } else { mFrom = null; } } }