Question

当我输入编辑文本值然后单击按钮以获取第二个值中的textview和edittext值时，我创建了两个textview和一个editText，这将显示在第二个listview中，但它将显示来自第一个的所有数据列表显示。

ArrayList<HashMap<String, String>> MyArrList;
String rate;
String itemn;
String quan;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.menuitem);
final ListView lisView1 = (ListView)findViewById(R.id.listView1);
final ListView lisView2 = (ListView)findViewById(R.id.listView2);            

MyArrList = new ArrayList<HashMap<String, String>>();

HashMap<String, String> map;

/*** Rows 1 ***/
map = new HashMap<String, String>();
map.put("ID", "Butterscotch");
map.put("Code", "Rs 10");
MyArrList.add(map);

/*** Rows 2 ***/
map = new HashMap<String, String>();
map.put("ID", "Birthday Cake");
map.put("Code", "Rs 100");
MyArrList.add(map);

/*** Rows 3 ***/
map = new HashMap<String, String>();
map.put("ID", "Black  Crunch");
map.put("Code", "Rs 102");
MyArrList.add(map);

/*** Rows 4 ***/
map = new HashMap<String, String>();
map.put("ID", "Industrial Chocolate");
map.put("Code", "Rs 200");
MyArrList.add(map);

/*** Rows 5 ***/
map = new HashMap<String, String>();
map.put("ID", "Coffee Molasses Chip");
map.put("Code", " Rs 500");
MyArrList.add(map);    

/*** Rows 5 ***/
map = new HashMap<String, String>();
map.put("ID", "Coffee Molasses Chip");
map.put("Code", " Rs 500");
MyArrList.add(map);    

lisView1.setAdapter(new CountryAdapter(this));

// Get Item Input
lisView1.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view,
            int position, long id) {
        // TODO Auto-generated method stub 

    Toast.makeText(Mmnue.this,""+ position  ,Toast.LENGTH_LONG).show(); 

    }
}); 

Button btnGetItem = (Button) findViewById(R.id.btnGetItem);
btnGetItem.setOnClickListener(new OnClickListener() 
{
public void onClick(View v) 
{
    TextView txtCode = (TextView)findViewById(R.id.ColCode);
    TextView itemnm = (TextView)findViewById(R.id.ColID);
    EditText txtInput = (EditText)findViewById(R.id.txtInput);

     rate = txtCode.getText().toString();
     itemnam = txtInput.getText().toString();
     quan= itemnm.getText().toString();


    int count = lisView1.getAdapter().getCount();

Toast.makeText（Mmnue.this，itemnam +＆＃34;，＆＃34; + rate +＆＃34;，＆＃34; + quan，Toast.LENGTH_LONG）.show（）; lisView2.setAdapter（new CountryAdapter2（getApplicationContext（）））;

}
});   
} 

public class CountryAdapter extends BaseAdapter
{
private Context context;

public CountryAdapter(Context c)
{
//super( c, R.layout.activity_column, R.id.rowTextView, );
// TODO Auto-generated method stub
context = c;
} 

public CountryAdapter(OnClickListener onClickListener) {
    // TODO Auto-generated constructor stub


} 

public int getCount() {
// TODO Auto-generated method stub
return MyArrList.size();
}

public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}

public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
 LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

if (convertView == null) {
convertView = inflater.inflate(R.layout.activity_mmnue, null);

}

// ColID
TextView txtID = (TextView) convertView.findViewById(R.id.ColID);

txtID.setText(MyArrList.get(position).get("ID") +".");

// ColCode
TextView txtCode = (TextView) convertView.findViewById(R.id.ColCode);
txtCode.setText(MyArrList.get(position).get("Code"));

return convertView;

}

}

public class CountryAdapter2 extends BaseAdapter
{
private Context context;

public CountryAdapter2(Context c)
{
//super( c, R.layout.activity_column, R.id.rowTextView, );
// TODO Auto-generated method stub
context = c;
} 

public int getCount() {
// TODO Auto-generated method stub
return MyArrList.size();
}

public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}

public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
 LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

if (convertView == null) {
convertView = inflater.inflate(R.layout.activity_mmnue, null);

}

// ColID
TextView txtID = (TextView) convertView.findViewById(R.id.ColID);
//txtID.setText(MyArrList.get(position).get("ID") +".");
txtID.setText(quan);
// ColCode
TextView txtCode = (TextView) convertView.findViewById(R.id.ColCode);
//  txtCode.setText(MyArrList.get(position).get("Code"));
txtCode.setText(rate);

return convertView;

}     
} 

@Override
public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
    return true;
} 

return super.onOptionsItemSelected(item);
} 
}

Answer 1

但它会显示第一个列表视图中的所有数据。

因为您从MyArrList.size();的{{1}}返回getCount()。因此，将其更改为CountryAdapter2，因为您只在第二个1中显示单行：

ListView

如何将一个自定义列表的选定数据显示到同一活动上的另一个自定义列表视图

1 个答案: