我正在使用列表视图。在我的列表视图中，我有文本、图像和复选框。我想在新的活动中打开选定的项目。但是当我点击按钮选择项目后，整个列表再次显示。我只想显示选定的项目。
我的 MainActivity.java 代码是
包 com.androidbegin.customimagelistview；
import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.content.ClipData.Item;
import android.content.Intent;
import android.graphics.Path.FillType;
import android.util.SparseBooleanArray;
import android.view.Menu;
import android.view.View.OnClickListener;
import android.webkit.WebView.FindListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.view.View;
public class MainActivity extends Activity implements OnItemClickListener, OnClickListener ,OnCheckedChangeListener {
ArrayList<Model> model = new ArrayList<Model>();
// Declare Variables
ListView list;
ListViewAdapter adapter;
String[] rank;
String[] country;
String[] population;
int[] flag;
//ArrayList<String> rank = new ArrayList<String>();
List<Model> list2=new ArrayList<Model>();
Button btn;
Button getChoice;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview_main);
btn=(Button)findViewById(R.id.button1);
btn.setOnClickListener(this);
//getChoice = (Button)findViewById(R.id.button1);
//ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_multiple_choice,country);
//adapter = new ListViewAdapter(this, model);
// Generate sample data
rank = new String[] { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" };
country = new String[] { "China", "India", "United States",
"Indonesia", "Brazil", "Pakistan", "Nigeria", "Bangladesh",
"Russia", "Japan" };
population = new String[] { "1,354,040,000", "1,210,193,422",
"315,761,000", "237,641,326", "193,946,886", "182,912,000",
"170,901,000", "152,518,015", "143,369,806", "127,360,000" };
flag = new int[] { R.drawable.china, R.drawable.india,
R.drawable.unitedstates, R.drawable.indonesia,
R.drawable.brazil, R.drawable.pakistan, R.drawable.nigeria,
R.drawable.bangladesh, R.drawable.russia, R.drawable.japan };
// Locate the ListView in listview_main.xml
list = (ListView) findViewById(R.id.listview);
// Pass results to ListViewAdapter Class
adapter = new ListViewAdapter(this, rank, country, population, flag);
// Binds the Adapter to the ListView
list.setAdapter(adapter);
// Capture button clicks on ListView items
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, final View view,
final int position, long id) {
SparseBooleanArray checked = list.getCheckedItemPositions();
ArrayList<String> selectedItems= new ArrayList<String>();
for(int i=0; i<checked.size();i++)
{
// Item position in adapter
int position1 = checked.keyAt(i);
// Add sport if it is checked i.e.) == TRUE!
if(checked.valueAt(i))
selectedItems.add((String) adapter.getItem(position1));
//oncheckedchANGElistner
}
String[] outputStrArr = new String[selectedItems.size()];
for (int i = 0; i < selectedItems.size(); i++) {
outputStrArr[i] = selectedItems.get(i);
}
Intent intent = new Intent(getApplicationContext(),SingleItemView.class);
Bundle b = new Bundle();
b.putStringArray("selectedItems", outputStrArr);
// Add the bundle to the intent.
intent.putExtras(b);
// start the ResultActivity
startActivity(intent);
TextView label = (TextView) view.getTag(R.id.rank);
CheckBox checkbox= (CheckBox) view.getTag(R.id.check);
Toast.makeText(view.getContext(), label.getText().toString()+ " " + isCheckedOrNot(checkbox), Toast.LENGTH_LONG).show();
// Send single item click data to SingleItemView Class
Intent i = new Intent(MainActivity.this, SingleItemView.class);
// Pass all data rank
i.putExtra("rank", rank);
// Pass all data country
i.putExtra("country", country);
// Pass all data population
i.putExtra("population", population);
// Pass all data flag
i.putExtra("flag", flag);
// Pass a single position
i.putExtra("position", position);
// Open SingleItemView.java Activity
startActivity(i);
CheckBox chk = (CheckBox)view.findViewById(R.id.check);
final ArrayList<Integer> checkedPositions = new ArrayList<Integer>();
chk.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if(isChecked=true)
{
checkedPositions.add(position);
}
}
});
}
private String isCheckedOrNot(CheckBox checkbox) {
if (checkbox.isChecked())
return "is checked";
else
return "is not checked";
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
}
@Override
public void onClick(View arg0) {
Intent i = new Intent(getApplicationContext(),SingleItemView.class);
i.putExtra("rank", rank);
i.putExtra("country", country);
i.putExtra("population", population);
i.putExtra("flag", flag);
startActivity(i);
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
}
}
提前致谢！！！