如何把一个listview中选中的值展示到另外一个 activity中

我正在创建一个简单的app,有一个功能是从第一个listView中取到选中的值展示到第二个activity中，中间是用了Intent传递，但是现在有个问题时我不知道如何才能在第二个activity中。

MainActivity.java

package com.devleb.listviewdemo;

import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends ListActivity {
TextView txt;
private static final String[] items = { "doctor", "engineer", "lawer",
"developer", "employee", "business man", "auditer", "cashier" };

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, items));
txt = (TextView) findViewById(R.id.txt);

}

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);

// txt.setText(items[position]);

Intent i = new Intent(this, SecondActivity.class);
i.putExtra("testonArray", items);
startActivity(i);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}
SecondActivity.java

package com.devleb.listviewdemo;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.EditText;
import android.widget.TextView;

public class SecondActivity extends Activity {

TextView txt;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);

Bundle extras=getIntent().getExtras();
String [] values = extras.getStringArray ("testonArray");
txt = (TextView) findViewById (R.id.txt2);
if (values != null && values.length > 0 && txt != null){
txt.setText(values [0]);
}

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.second, menu);
return true;
}

}

处理方法

First Activity的代码:

+@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);

// txt.setText(items[position]);

// Try to send the items[position] in the intent
Intent i = new Intent(this, SecondActivity.class);
i.putExtra("testonArray", items[position].toString());
startActivity(i);
}

第二个activity代码

Bundle extras=getIntent().getExtras();
String selected_item=extras.getString("testonArray");
txt = (TextView) findViewById (R.id.txt2);
txt.setText(selected_item);

原文地址：http://www.itmmd.com/201411/215.html 

该文章由 萌萌的IT人 整理发布,转载须标明出处。