Android实战简易课程-第三十七枪（ListView中点击button跳转到拨号界面实例）

最近讨论了一个项目需求，在ListView的Item中放置了一个类似电话的图标，点击图标可以将号码调到拨号界面。实现起来很是容易，原理也易懂，较为实用，项目中有需要的可以直接引入。
我模拟了一个简单的demo.代码如下：
1.ListAdapter.java:

package com.example.listviewphone;import java.util.List;import android.content.Context;import android.content.Intent;import android.net.Uri;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;public class ListAdapter extends BaseAdapter {    private List<Test> tests;    private Context context;    LayoutInflater layoutInflater;    public ListAdapter(Context context,List<Test> tests){        this.tests=tests;        this.context=context;        layoutInflater=LayoutInflater.from(context);    }    @Override    public int getCount() {        return tests.size();    }    @Override    public Object getItem(int position) {        return tests.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(final int position, View convertView, ViewGroup parent) {        ViewHolder viewHolder=null;        if(convertView==null){            viewHolder=new ViewHolder();            convertView=layoutInflater.inflate(R.layout.item_list, null);            viewHolder.mTitleLisTextView=(TextView)convertView.findViewById(R.id.tv_title_list);            viewHolder.mPhoneTextView=(TextView)convertView.findViewById(R.id.tv_phone_list);            convertView.setTag(viewHolder);        }else {            viewHolder=(ViewHolder) convertView.getTag();        }        viewHolder.mTitleLisTextView.setText(tests.get(position).getTitle_lost());        viewHolder.mPhoneTextView.setText(tests.get(position).getPhone_lost());        viewHolder.mPhoneTextView.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                 // Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+tests.get(position).getPhone_lost()));  //直接拨打电话，较为暴利，慎用！                Intent intent = new Intent(Intent.ACTION_DIAL,Uri.parse("tel:"+tests.get(position).getPhone_lost()));  //跳转到用户界面较为温和，推荐使用！                    context.startActivity(intent);              }        });        return convertView;    }    class ViewHolder {        private TextView mPhoneTextView;        private TextView mTitleLisTextView;        ViewHolder() {        }    }}

2.javabean—Test.java:

package com.example.listviewphone;public class Test {  private String content_test;  private String phone_test;  private String title_test;  private String username;public String getContent_test() {    return content_test;}public void setContent_test(String content_test) {    this.content_test = content_test;}public String getPhone_test() {    return phone_test;}public void setPhone_test(String phone_test) {    this.phone_test = phone_test;}public String getTitle_test() {    return title_test;}public void setTitle_test(String title_test) {    this.title_test = title_test;}public String getUsername() {    return username;}public void setUsername(String username) {    this.username = username;}}

3.MainActivity.java:

package com.example.listviewphone;import java.util.ArrayList;import java.util.List;import javax.security.auth.PrivateCredentialPermission;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.Window;import android.widget.ListView;public class MainActivity extends Activity {    private ListView mListView;    private ListAdapter adapter;    private List<Test> tests;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        mListView=(ListView)findViewById(R.id.listview);        initDatas();        adapter=new ListAdapter(this, tests);        mListView.setAdapter(adapter);    }    private void initDatas() {        tests=new ArrayList<Test>();        for (int i = 0; i < 30; i++) {            Test test =new Test();            test.setTitle_test("电话");            test.setPhone_test("123456789"+i);            tests.add(test);        }    }}

下面是简单的两个布局文件：
1.activity_main.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent" >    <ListView        android:id="@+id/listview"        android:layout_width="match_parent"        android:layout_height="wrap_content" /></RelativeLayout>

2.item_list.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:padding="10dp"    android:background="#ffffff"    android:orientation="horizontal" >    <TextView        android:id="@+id/tv_title_list"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="电话"        android:singleLine="true"        >    </TextView>    <TextView        android:id="@+id/tv_phone_list"        android:textSize="12sp"       android:layout_height="wrap_content"       android:layout_width="wrap_content"        android:background="@color/green"        android:text="138024249542"        android:padding="4dp"        android:layout_marginLeft="140dp"        android:drawableLeft="@drawable/icon_photo" >    </TextView></LinearLayout>

运行实例如下：

总结：有两种跳转，1-Intent.ACTION_CALL 直接拨打电话，较为暴利慎用；
2-Intent.ACTION_DIAL 跳到拨打界面，推荐使用

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