点击listView的具体内容 ,进入其他activity中

文章标签: android,android-intent
2014-11-9 9:51:42     人阅读    

我在android app中有一个搜索框,通过搜索展示一个ListView,我想在对应的选择项点击之后进入该app的其他activity中,应该怎么做? 我的代码如下:

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.SimpleAdapter;
import android.widget.TextView;


public class MainActivity extends Activity {

    List> adp;
    // Array of strings storing country names
    String[] countries = new String[] {
            "India",
            "Pakistan",
            "Sri Lanka",
            "China",
            "Bangladesh",
            "Nepal",
            "Afghanistan",
            "North Korea",
            "South Korea",
            "Japan"
    };

 //  代表图片的int指针集合,图片存储在 /res/drawable-ldpi/
    int[] flags = new int[]{
                R.drawable.india,
                R.drawable.pakistan,
                R.drawable.srilanka,
                R.drawable.china,
                R.drawable.bangladesh,
                R.drawable.nepal,
                R.drawable.afghanistan,
                R.drawable.nkorea,
                R.drawable.skorea,
                R.drawable.japan
 
    };

    // Array of strings to store currencies 
    String[] currency = new String[]{
        "Indian Rupee",
        "Pakistani Rupee",
        "Sri Lankan Rupee",
        "Renminbi",
        "Bangladeshi Taka",
        "Nepalese Rupee",
        "Afghani",
        "North Korean Won",
        "South Korean Won",
        "Japanese Yen"
    };




    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        // 遍历map获得每一个名称,标示
        List> aList = new ArrayList>();

        for(int i=0;i<10;i++){
                HashMap hm = new HashMap();
            hm.put("txt", countries[i]);
            hm.put("flag", Integer.toString(flags[i]) );
            hm.put("cur", currency[i]);
            aList.add(hm);
        }

        //   中使用的 Keys 
        String[] from = { "flag","txt"};

        //   listview_layout 中使用的IDS
        int[] to = { R.id.flag,R.id.txt};

        // 怎对每一项创建一个  adapter 
        //  使用 R.layout.listview_layout  定义每一个
        SimpleAdapter adapter = new SimpleAdapter(getBaseContext(), aList, R.layout.autocomplete_layout, from, to);

        // 通过 activity_main.xml  配置获得 CustomAutoCompleteTextView 视图
        CustomAutoCompleteTextView autoComplete = ( CustomAutoCompleteTextView) findViewById(R.id.autocomplete);

        /**   为 autocompletetextview  定义一个点击项目时间监听*/
        OnItemClickListener itemClickListener = new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView arg0, View arg1, int position, long id) {


            }
        };

        /**   设置事件*/
        autoComplete.setOnItemClickListener(itemClickListener);

        /**  设置 adapter */
        autoComplete.setAdapter(adapter);

    }

    /** 
        回调方法,在activity  被kill掉的时候执行
      主要是用来保存当前activity 的状态
     */
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        TextView tvCurrency = (TextView) findViewById(R.id.tv_currency) ;
        outState.putString("currency", tvCurrency.getText().toString());
        super.onSaveInstanceState(outState);
    }

    /** A callback method, which is executed when the activity is recreated 
          回调方法,在activity 被重建的时候执行
 
     */
    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        TextView tvCurrency = (TextView) findViewById(R.id.tv_currency) ;
        tvCurrency.setText(savedInstanceState.getString("currency"));
        super.onRestoreInstanceState(savedInstanceState);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}

处理方法


第一步:在 AndroidManifest 中声明你的activity被调用
<application
.
...       
 
     <activity
            android:name="com.hello.world.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.hello.world.MyNextActivity"/>
.
...

</application>

第二步:在你点事件中添加如下代码.

/** Defining an itemclick event listener for the autocompletetextview */
    OnItemClickListener itemClickListener = new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int position, long id) {
             Intent intent = new Intent(MainActivity.this, MyNextActivity.class);
             //Get the value of the item you clicked
             String itemClicked = countries[position];
             intent.putExtra("country", itemClicked);
             startActivity(intent);

        }
 };

第三步:在你的activity通过onCreate方法接受值

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.download_pads_layout);

     String country = getIntent().getStringExtra("country");

}


原文地址:http://www.itmmd.com/201411/148.html
该文章由 萌萌的IT人 整理发布,转载须标明出处。

android 通过点击上下文菜单采用intent启动activity   上一篇
下一篇  android 开发,视频群聊引发短信异常
精彩回复
我要追加问题,请求站长解决!
姓名:       

《程序员app》专门为程序员量身定做!