Question

我做了一个简单的任务，从数据库中获取数据，然后在listview上充气。但是当我点击listrow它没有被选中时我遇到问题，当我点击我从数据库列出的文本然后它执行选择（setonitemclicklistenr工作）....我还想将该特定的listrow_text传递给其他活动来编辑该文本....我尝试了一种方法在getview（）视图上执行clicklistener但它不接受startActivity （意图）命令

如果我在活动类中使用setonitemclicklistener，我该如何获得该文本... 我是一个初学者，在理解代码时遇到了问题，我搜索了我的问题......

列出我使用自定义适配器的类

package com.example.smarttext2;

     import android.app.Activity;
     import android.content.Intent;
     import android.database.Cursor;
     import android.os.Bundle;
     import android.view.View;
     import android.widget.AdapterView;
     import android.widget.AdapterView.OnItemClickListener;
     import android.widget.ListView;
     import android.widget.Toast;



   public class dialoglist extends Activity {
        ListView list;
        Cursor cursor;
int count;
String[] str;
dialogadapter adapter;
database demo2;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.dialoglist);

    demo2 = new database(getApplicationContext());

    list = (ListView)findViewById(R.id.listView1);



    cursor = demo2.fetch();
    count = cursor.getCount();
    str = new String[count];

    cursor.moveToFirst();
    for(int i=0;i<count;i++)
    {
        str[i]=cursor.getString(0);
        cursor.moveToNext();
    }
    adapter = new dialogadapter(this, str);
    list.setAdapter(adapter);

    list.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> adapview, View view, int position,
                long pos_id) {
            // TODO Auto-generated method stub
            String pos = view.toString();//this line gives some value like          android.widget.linearlayout473y5834434....
            //Toast.makeText(getApplicationContext(), pos, Toast.LENGTH_LONG).show();
            Intent intent = new Intent(dialoglist.this,third.class);
            intent.putExtra("key",pos);
            startActivity(intent);
        }
    });



}

}

适配器类

      package com.example.smarttext2;



    public class dialogadapter extends BaseAdapter {
           Context context;
           String[] str1;
           LayoutInflater inflater;

  public dialogadapter(Context con,String[] st1) {
    // TODO Auto-generated constructor stub
     context = con;
     str1 = st1;
     inflater = ((Activity)con).getLayoutInflater();
} 

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return str1.length;
}

@Override
public Object getItem(int arg0) {
    // TODO Auto-generated method stub
    return arg0;
}

@Override
public long getItemId(int arg0) {
    // TODO Auto-generated method stub
    return 0;
}

@Override
public View getView(final int position, View v, ViewGroup parent) {
    // TODO Auto-generated method stub
    v = inflater.inflate(R.layout.dialoglistitem, null);
    final TextView text = (TextView)v.findViewById(R.id.textView1);
    text.setText(str1[position]);


    return v;
}

}

我想发送数据的活动

 package com.example.smarttext2;

    import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.EditText;

    public class third extends Activity {
        EditText et1;
        Button btn1;
        database demo;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.third);
    Intent intent = getIntent();
    String str1 = intent.getStringExtra("key");

    et1 =(EditText)findViewById(R.id.editText1);
    btn1 = (Button)findViewById(R.id.button1);

    et1.setText(str1);

    demo = new database(getApplicationContext());

    btn1.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            demo.add(et1.getText().toString());
            finish();
        }
    });

}

}

Answer 1

  list.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View v, int arg2,
                final long arg3) {
            // TODO Auto-generated method stub
            TextView text = (TextView) v.findViewById(R.id.textView1);
            String string = text.getText().toString();
            Toast.makeText(getApplicationContext(), string, 3000).show();
            Intent intent = new Intent(dialoglist.this,third.class);
            intent.putExtra("key", string);
            startActivity(intent);


        }
    });

如何使用setonitemclicklistener从自定义列表中获取元素

1 个答案: