android - 如何添加一个按钮来调用以编程方式给定的电话号码？

Question

我有一个应用程序，显示 friend 列表(每个 friend 都有全名和手机)。

我正在使用 android 开发人员指南的 listActiviti 示例的变体

有人可以完成我的代码或告诉我如何在每个列表项的右侧放置一个按钮的代码示例，当用户按下该按钮时，电话会调用该用户的电话号码。此外，现在，当用户按下列表项(而不是按钮)时，它会打开一个新 Activity 来显示 friend 的详细信息......此功能必须与按钮分开工作

这是我的 list_item.xml:

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp"
    android:textSize="16sp" >
</TextView>

这是我的 listActivity 代码:

public class AllActivity extends ListActivity {

RemoteConnection con; //conexion remota 
private List<Friend> friends; //lista de amigos
private List<String> usernames; //lista de usernames de amigos, para rellenar el listview
static SharedPreferences settings;
static SharedPreferences.Editor configEditor;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);        
    settings=PreferenceManager.getDefaultSharedPreferences(this.getApplicationContext());
    configEditor = settings.edit();
    friends = new ArrayList<Friend>();
    usernames = new ArrayList<String>();
    con = new RemoteConnection();
    actualizar();

}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == 1) {
        setResult(1);
        finish();                   
    }
}
public void onResume() {
    super.onResume();       
   }   
    public void actualizar()
    {
        friends = MyApplication.getDatabaseAdapter().retrieveAllFriends();
        usernames.clear();


for (int i=0;i<friends.size();i++)
        {
            usernames.add(i,friends.get(i).getFullName());
        }
        setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, usernames));
        ListView lv = getListView();
        lv.setTextFilterEnabled(true);
        lv.setOnItemClickListener(new OnItemClickListener() {
          public void onItemClick(AdapterView<?> parent, View view,
              int position, long id) {


              Bundle bundle = new Bundle(); //bundle is like the letter           
              bundle.putString ("user", friends.get(position).getFullName()); //arg1 is the keyword of the txt, arg2 is the txt
              bundle.putString ("email", friends.get(position).getEmail());
              bundle.putString ("permission", friends.get(position).getPermission());

              Intent i=null;
              if (friends.get(position).getPermission().equals("total"))
                  i = new Intent (AllActivity.this, Locate.class);
              else if (friends.get(position).getPermission().equals("perhours"))
                  i = new Intent (AllActivity.this, LocatePerHours.class);
              else
                  i = new Intent (AllActivity.this, LocatePerDays.class);

              i.putExtras(bundle);
              startActivity(i);
          }
        });
    }
}

Answer 1

要从按钮单击调用，您可以使用此 sol: How to make a phone call in android and come back to my activity when the call is done?

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为了解决问题以恢复您的 Activity ，请尝试此解决方案:http://www.tutorialforandroid.com/2009/01/get-phone-state-when-someone-is-calling_22.html