我正在尝试在一些其他小部件(按钮,editText等)下设置Listview.我不想为listview使用另一个活动.阅读后我发现了
How can I implement a ListView without ListActivity? (use only Activity),我试图做到这一点,最后结束了:
这是我的main.xml:
这是我的main.xml:
<LinearLayout android:id="@+id/relativeLayout1" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical"> <TextView ...[some code].../> <EditText ...[some code].../> <ImageButton ...[some code].../> <Chronometer ..[some code]..../> <ListView android:id="@+id/listView1" android:layout_height="wrap_content" android:layout_width="fill_parent"></ListView>
这是我的onCreate:
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); button1 = (ImageButton) findViewById(R.id.button1); mChronometer = (Chronometer) findViewById(R.id.chronometer1); editText1 = (EditText) findViewById(R.id.editText1); ListView lv = (ListView) findViewById(R.id.listView1); String[] listword = new String[] {"Hello","World","Foo","Bar"}; lv.setAdapter(new ArrayAdapter<String>(this,R.layout.list_item,listword)); }
这里是list_item.xml
<?xml version="1.0" encoding="utf-8"?> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dp" android:textSize="16sp" > </TextView>
当我在物理设备中进行调试时,应用程序只需保留所有黑色.如果我注释了涉及列表的onCreate()的行,那么应用程序可以工作(显然没有listview).
任何想法可能是错的?
解决方法
我实际上有一个应用程序与ListView下面的一些TextViews和以上两个按钮,让我抓住我的代码!
这是我的活动与列表视图下面的文本视图和上面的按钮(为了简洁相当有点删除):
public class BNYDirectoryResults extends Activity{ public static String[] stuff; ListView list; BNYAdapter adapter; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.resultscreen); TextView headDisplay = (TextView)findViewById(R.id.results); TextView headCount = (TextView)findViewById(R.id.resultsTotal); TextView headPages = (TextView)findViewById(R.id.pages); //Set up the results list,see BNYAdapter list = (ListView)findViewById(R.id.list); adapter = new BNYAdapter (this,BNYDirectory.ReturnResults); list.setAdapter(adapter); //Sets up header information (pages,total results) //Just some stuff to change the TextViews //Passes EmployeeID and Phone Number to AND opens the details page list.setOnItemClickListener(new OnItemClickListener(){ public void onItemClick(AdapterView<?> parent,View view,int position,long id){ String EID = BNYDirectory.ReturnResults[position][0]; String phoneNumber = BNYDirectory.ReturnResults[position][2]; BNYDirectoryTransaction.doDetails(EID,phoneNumber); Intent i = new Intent(view.getContext(),BNYDirectoryDetails.class); startActivity(i); } }); } }
这是它的XML文件:
<TextView android:id="@+id/results" android:text="Name" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:textStyle="bold"/> <TextView android:id="@+id/resultsTotal" android:text="Phone" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:textStyle="bold"/> <TextView android:id="@+id/pages" android:text="AIM" android:gravity="center" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:textStyle="bold"/> </LinearLayout> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:id="@+id/name" android:text="Name" android:gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" /> <TextView android:id="@+id/phone" android:text="Phone" android:gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" /> <TextView android:id="@+id/aim" android:text="AIM" android:gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" /> <TextView android:id="@+id/dept" android:text="Dept" android:gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" /> </LinearLayout> <ListView android:id="@+id/list" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1"/> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <Button android:id="@+id/prevButton" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="PrevIoUs" android:layout_weight="1"/> <Button android:id="@+id/nextButton" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Next" android:layout_weight="1"/> </LinearLayout> </LinearLayout>
这是列表的自定义适配器:
import android.app.Activity; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; public class BNYAdapter extends BaseAdapter { private Activity activity; private String[][] results; private static LayoutInflater inflater=null; public BNYAdapter(Activity a,String[][]info) { activity = a; results = info; inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } public int getCount() { return results.length; } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public static class ViewHolder{ public TextView name; public TextView phone; public TextView aim; public TextView dept; } public View getView(int position,View convertView,ViewGroup parent) { View vi=convertView; ViewHolder holder; if(convertView==null){ vi = inflater.inflate(R.layout.item,null); holder=new ViewHolder(); holder.name=(TextView)vi.findViewById(R.id.nameItem); holder.phone=(TextView)vi.findViewById(R.id.phoneItem); holder.aim=(TextView)vi.findViewById(R.id.aimItem); holder.dept=(TextView)vi.findViewById(R.id.deptItem); vi.setTag(holder); } else holder=(ViewHolder)vi.getTag(); holder.name.setText(BNYDirectory.ReturnResults[position][1]); holder.phone.setText(BNYDirectory.ReturnResults[position][2]); holder.aim.setText(BNYDirectory.ReturnResults[position][3]); holder.dept.setText(BNYDirectory.ReturnResults[position][4]); return vi; } }
和所有在一起,使一个页面像