我正在尝试将点击我的listactivity的值显示在third.xml上。它有4个editText字段。我想在4个ET字段上显示4列。救命！！！ HEre是用于在我的DBAdapter中获取特定记录的代码：
public Cursor getRecord(long rowId) throws SQLException
{
Cursor mCursor =
db.query(true, DATABASE_TABLE, new String[] {ROW_ID,
KEY_FIRSTNAME, KEY_LASTNAME, KEY_CITY, KEY_STATE},
ROW_ID + "=" + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
然后这是我的Second.java列表活动 package com.dtan.testcontacts;
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnLongClickListener;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.AdapterView.AdapterContextMenuInfo;
public class Second extends ListActivity {
public final static String ID_EXTRA="com.dtan.testcontacts._ID";
DBAdapter db = new DBAdapter(this);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
db.open();
Cursor c = db.getAllContacts();
ArrayList<String> columns = new ArrayList<String>();
int iFirstName = c.getColumnIndex(DBAdapter.KEY_FIRSTNAME);
int iLastName = c.getColumnIndex(DBAdapter.KEY_LASTNAME);
for(c.move(0); c.moveToNext(); c.isAfterLast()){
String columnstring = c.getString(iFirstName)+ " " + c.getString(iLastName)+"\n";
columns.add(columnstring);
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, columns);
setListAdapter(adapter);
final ListView lv = getListView();
registerForContextMenu(lv);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.contextmenu, menu);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
final AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
switch(item.getItemId()){
case R.id.delete:
AlertDialog.Builder abuilder = new AlertDialog.Builder(Second.this);
abuilder.setMessage("Are you sure you want to delete?");
abuilder.setCancelable(false);
abuilder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Cursor c = db.getAllContacts();
c.moveToPosition(info.position);
String id = c.getString(c.getColumnIndex(DBAdapter.ROW_ID));
db.open();
db.deleteContact(Long.parseLong(id));
c.close();
Toast toast = Toast.makeText(Second.this, "Contact Deleted Successfully", 5000);
toast.show();
Intent i = new Intent(Second.this, Second.class);
startActivity(i);
}
});
abuilder.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog alert = abuilder.create();
alert.show();
return true;
case R.id.edit:
getListView().setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> lv, View cell,
int position, long id) {
Intent i = new Intent(Second.this, Third.class);
i.putExtra("entry_id", position);
startActivity(i);
}
});
}
return super.onContextItemSelected(item);
}
}
最后，这是第三个活动，我想显示点击listactivity的值，以显示在每个edittext上。 xml首先是java代码：
<EditText
android:id="@+id/editText1Third"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_marginTop="20dp"
android:clickable="false"
android:ems="10"
android:hint="Firstname"
android:inputType="text"
android:text="@string/none" />
<TextView
android:id="@+id/textView1"
android:layout_width="110dp"
android:layout_height="wrap_content"
android:text="@string/fname" />
<EditText
android:id="@+id/editText2Third"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_marginTop="20dp"
android:ems="10"
android:hint="Lastname"
android:inputType="text"
android:text="@string/none" />
<TextView
android:id="@+id/textView2"
android:layout_width="74dp"
android:layout_height="wrap_content"
android:text="@string/lastname" />
<EditText
android:id="@+id/editText3Third"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_marginTop="20dp"
android:ems="10"
android:hint="City"
android:inputType="text"
android:text="@string/none" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/city" />
<EditText
android:id="@+id/editText4Third"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginRight="30dp"
android:layout_marginTop="20dp"
android:ems="10"
android:hint="State"
android:inputType="text"
android:text="@string/none" >
<requestFocus />
</EditText>
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/state" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="64dp" >
<Button
android:id="@+id/ButtonUpdateThird"
android:layout_width="100dp"
android:layout_height="60dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:gravity="center"
android:text="@string/update" />
</RelativeLayout>
</LinearLayout>
Third.java
package com.dtan.testcontacts;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.widget.EditText;
public class Third extends Activity {
private DBAdapter db;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.third);
int b = this.getIntent().getExtras().getInt("entry_id");
EditText firstname = (EditText) findViewById(R.id.editText1Third);
db.open();
Cursor c = db.getRecord(b);
firstname.setText(c.getString(1));
db.close();
}
}