Android 如何使用arraylist中的姓名和号码从listview拨打电话

当点击有姓名和手机号码的列表视图时，我无法呼叫

此外，当click事件发生时，如何在每次单击listview时从arraylist获取手机号码

主要活动

package com.example.vinod.mycommunity;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Set the content of the activity to use the activity_main.xml layout file
        setContentView(R.layout.activity_main);

    }

    public void contactClick (View view){

        // Create a new intent to open the {@link NumbersActivity}
        Intent numbersIntent = new Intent(MainActivity.this, ContactList.class);

        // Start the new activity
        startActivity(numbersIntent);
    }
}

自定义对象

    package com.example.vinod.mycommunity;



/**
 * Created by vinod on 24/8/17.
 */

public class CustomContactList {

    private String mNames;
    private String mNumber;


    public CustomContactList(String Names, String Numbers) {
        mNames = Names;
        mNumber = Numbers;
    }

    public String getmNames() {
        return mNames;

    }

    public String getmNumber() {
        return mNumber;

    }

}

联系人列表活动

package com.example.vinod.mycommunity;


import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;

import java.util.ArrayList;


public class ContactList extends AppCompatActivity {


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

        // Create an arrayList of Contact Name and contact Number
        ArrayList<CustomContactList> contactsArray = new ArrayList<CustomContactList>();

        contactsArray.add(new CustomContactList("Vinod Lohar", "9987376064"));
        contactsArray.add(new CustomContactList("Mukesh Lohar", "9983154742"));
        contactsArray.add(new CustomContactList("Arjun Lohar", "9694544296"));
        contactsArray.add(new CustomContactList("Sapna Lohar", "9521130633"));
        contactsArray.add(new CustomContactList("Ramesh Lohar", "7718835888"));
        contactsArray.add(new CustomContactList("Manju Lohar", "9029788725"));
        contactsArray.add(new CustomContactList("Jagdish Lohar", "9987409707"));
        contactsArray.add(new CustomContactList("Rekha Lohar", "9001239708"));
        contactsArray.add(new CustomContactList("Jyoti Lohar", "9828146608"));
        contactsArray.add(new CustomContactList("Dinesh Lohar", "9521663206"));
        contactsArray.add(new CustomContactList("Chunnibai Lohar", "9521085134"));
        contactsArray.add(new CustomContactList("Rekha Lohar Udaipur", "9828504595"));
        contactsArray.add(new CustomContactList("Jagdish Ji Lohar Udaipur", "9828119641"));


        ContactAdapter adapter = new ContactAdapter(this, contactsArray);
        ListView listView = (ListView) findViewById(R.id.list);
        listView.setAdapter(adapter);
    }


}

public void onItemClick(AdapterView<?> adapterView, View view, int     position, long l)
{    
    // Get Phone Number    
    String phone = ((CustomContactList)adapter.getItem(position)).getmNumber();

    // Make a call
    Intent phoneIntent = new Intent(Intent.ACTION_CALL);
    phoneIntent.setData(Uri.parse("tel:" + phone));
    startActivity(phoneIntent);
}

package com.example.vinod.mycommunity；
导入android.support.v7.app.AppActivity；
导入android.os.Bundle；
导入android.widget.ListView；
导入java.util.ArrayList；
公共类联系人列表扩展了AppCompatActivity{
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity\u contact\u list）；
//创建联系人姓名和联系人号码的arrayList
ArrayList contactsArray=新的ArrayList（）；
contactsArray.add（新的客户联系人列表（“Vinod Lohar”，“9987376064”）；
contactsArray.add（新的客户联系人列表（“Mukesh Lohar”，“9983154742”）；
contactsArray.add（新的客户联系人列表（“Arjun Lohar”，“9694544296”）；
contactsArray.add（新的客户联系人列表（“Sapna Lohar”、“9521130633”）；
contactsArray.add（新的客户联系人列表（“Ramesh Lohar”，“7718835888”）；
contactsArray.add（新的客户联系人列表（“Manju Lohar”，“9029788725”））；
contactsArray.add（新的客户联系人列表（“Jagdish Lohar”，“9987409707”）；
contactsArray.add（新的客户联系人列表（“Rekha Lohar”，“9001239708”）；
contactsArray.add（新的客户联系人列表（“Jyoti Lohar”，“9828146608”）；
添加（新的客户联系人列表（“Dinesh Lohar”，“9521663206”）；
contactsArray.add（新的客户联系人列表（“Chunnibai Lohar”，“9521085134”）；
contactsArray.add（新的客户联系人列表（“Rekha Lohar Udaipur”，“9828504595”）；
contactsArray.add（新的客户联系人列表（“Jagdish Ji Lohar Udaipur”，“9828119641”）；
ContactAdapter=新的ContactAdapter（此为contactsArray）；
ListView ListView=（ListView）findViewById（R.id.list）；
setAdapter（适配器）；
}
}

自定义适配器

package com.example.vinod.mycommunity;

import android.app.Activity;
import android.support.annotation.NonNull;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.TextView;


import java.util.ArrayList;


/**
 * Created by vinod on 25/8/17.
 */

public class ContactAdapter extends ArrayAdapter<CustomContactList> {

    public ContactAdapter(Activity context, ArrayList<CustomContactList> contactsArray) {
        // Here, we initialize the ArrayAdapter's internal storage for the context and the list.
        // the second argument is used when the ArrayAdapter is populating a single TextView.
        // Because this is a custom adapter for two TextViews and an ImageView, the adapter is not
        // going to use this second argument, so it can be any value. Here, we used 0.
        super(context, 0, contactsArray);
    }

    @NonNull
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // Check if the existing view is being reused, otherwise inflate the view
        View listItemView = convertView;
        if (listItemView == null) {
            listItemView = LayoutInflater.from(getContext()).inflate(
                    R.layout.list_item, parent, false);
        }

        // Get the CustomContactList object located at this position in the list
        CustomContactList currentContactList = getItem(position);

        // Find the TextView in the list_item.xml layout with the ID Name_TextView
        TextView nameTextView = (TextView) listItemView.findViewById(R.id.Name_TextView);
        // Get the contact name from the current CustomContactList object and
        // set this text on the name TextView
        nameTextView.setText(currentContactList.getmNames());

        // Find the TextView in the list_item.xml layout with the Id Number_TextView
        TextView numberTextView = (TextView) listItemView.findViewById(R.id.Number_TextView);
        // Get the contact number from the current CustomContactList object and
        // set this text on the number TextView
        numberTextView.setText(currentContactList.getmNumber());

        // Return the whole list item layout (containing 2 TextViews)
        // so that it can be shown in the ListView
        return listItemView;
    }
}

package com.example.vinod.mycommunity；
导入android.app.Activity；
导入android.support.annotation.NonNull；
导入android.view.LayoutInflater；
导入android.view.view；
导入android.view.ViewGroup；
导入android.widget.ArrayAdapter；
导入android.widget.TextView；
导入java.util.ArrayList；
/**
*维诺德于2017年8月25日创作。
*/
公共类ContactAdapter扩展了ArrayAdapter{
公共联系人适配器（活动上下文，ArrayList contactsArray）{
//这里，我们为上下文和列表初始化ArrayAdapter的内部存储。
//第二个参数在ArrayAdapter填充单个TextView时使用。
//因为这是两个TextView和一个ImageView的自定义适配器，所以适配器不是
//我们将使用第二个参数，所以它可以是任何值。
超级（上下文，0，contactsArray）；
}
@非空
@凌驾
公共视图getView（int位置、视图转换视图、视图组父视图）{
//检查现有视图是否正在重新使用，否则会膨胀视图
View listItemView=convertView；
如果（listItemView==null）{
listItemView=LayoutFlater.from（getContext（））.inflate(
R.layout.list_项，父项，false）；
}
//获取位于列表中此位置的CustomContactList对象
CustomContactList currentContactList=getItem（位置）；
//在列表_item.xml布局中查找ID名为_TextView的TextView
TextView Name TextView=（TextView）listItemView.findViewById（R.id.Name\u TextView）；
//从当前CustomContactList对象获取联系人姓名，然后
//在名称TextView上设置此文本
nameTextView.setText（currentContactList.getmNames（））；
//在列表\u item.xml布局中查找Id号为\u TextView的TextView
TextView numberTextView=（TextView）listItemView.findViewById（R.id.Number\u TextView）；
//从当前CustomContactList对象获取联系人号码，然后
//在数字文本视图上设置此文本
numberTextView.setText（currentContactList.getmNumber（））；
//返回整个列表项布局（包含2个文本视图）
//以便可以在ListView中显示它
返回listItemView；
}
}

主活动布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/contact_text_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#a4c639"
        android:onClick="contactClick"
        android:text="Contacts"
        android:textAlignment="center"
        android:textSize="40dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="horizontal"
    android:padding="16dp">


    <TextView
        android:id="@+id/Name_TextView"
        android:layout_width="wrap_content"
        android:layout_height="42dp"
        android:layout_gravity="start"
        android:layout_weight="1"
        android:textAlignment="textStart"
        android:textSize="14sp"
        tools:text="Names" />

    <TextView
        android:id="@+id/Number_TextView"
        android:layout_width="wrap_content"
        android:layout_height="42dp"
        android:layout_gravity="start"
        android:layout_weight="1"
        android:textAlignment="textStart"
        android:textSize="14sp"
        tools:text="Numbers" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/linearlist"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp"
    tools:context="com.example.vinod.mycommunity.ContactList">

    <EditText
        android:id="@+id/textBox"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Search Contacts"
        android:paddingLeft="14dp"
        android:textSize="14sp" />

    <ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

列表项布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/contact_text_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#a4c639"
        android:onClick="contactClick"
        android:text="Contacts"
        android:textAlignment="center"
        android:textSize="40dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="horizontal"
    android:padding="16dp">


    <TextView
        android:id="@+id/Name_TextView"
        android:layout_width="wrap_content"
        android:layout_height="42dp"
        android:layout_gravity="start"
        android:layout_weight="1"
        android:textAlignment="textStart"
        android:textSize="14sp"
        tools:text="Names" />

    <TextView
        android:id="@+id/Number_TextView"
        android:layout_width="wrap_content"
        android:layout_height="42dp"
        android:layout_gravity="start"
        android:layout_weight="1"
        android:textAlignment="textStart"
        android:textSize="14sp"
        tools:text="Numbers" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/linearlist"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp"
    tools:context="com.example.vinod.mycommunity.ContactList">

    <EditText
        android:id="@+id/textBox"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Search Contacts"
        android:paddingLeft="14dp"
        android:textSize="14sp" />

    <ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

联系人列表布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/contact_text_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#a4c639"
        android:onClick="contactClick"
        android:text="Contacts"
        android:textAlignment="center"
        android:textSize="40dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="horizontal"
    android:padding="16dp">


    <TextView
        android:id="@+id/Name_TextView"
        android:layout_width="wrap_content"
        android:layout_height="42dp"
        android:layout_gravity="start"
        android:layout_weight="1"
        android:textAlignment="textStart"
        android:textSize="14sp"
        tools:text="Names" />

    <TextView
        android:id="@+id/Number_TextView"
        android:layout_width="wrap_content"
        android:layout_height="42dp"
        android:layout_gravity="start"
        android:layout_weight="1"
        android:textAlignment="textStart"
        android:textSize="14sp"
        tools:text="Numbers" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/linearlist"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp"
    tools:context="com.example.vinod.mycommunity.ContactList">

    <EditText
        android:id="@+id/textBox"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Search Contacts"
        android:paddingLeft="14dp"
        android:textSize="14sp" />

    <ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

---

为联系人列表活动中的listView实现ItemClickListener

package com.example.vinod.mycommunity;


import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;

import java.util.ArrayList;


public class ContactList extends AppCompatActivity {


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

        // Create an arrayList of Contact Name and contact Number
        ArrayList<CustomContactList> contactsArray = new ArrayList<CustomContactList>();

        contactsArray.add(new CustomContactList("Vinod Lohar", "9987376064"));
        contactsArray.add(new CustomContactList("Mukesh Lohar", "9983154742"));
        contactsArray.add(new CustomContactList("Arjun Lohar", "9694544296"));
        contactsArray.add(new CustomContactList("Sapna Lohar", "9521130633"));
        contactsArray.add(new CustomContactList("Ramesh Lohar", "7718835888"));
        contactsArray.add(new CustomContactList("Manju Lohar", "9029788725"));
        contactsArray.add(new CustomContactList("Jagdish Lohar", "9987409707"));
        contactsArray.add(new CustomContactList("Rekha Lohar", "9001239708"));
        contactsArray.add(new CustomContactList("Jyoti Lohar", "9828146608"));
        contactsArray.add(new CustomContactList("Dinesh Lohar", "9521663206"));
        contactsArray.add(new CustomContactList("Chunnibai Lohar", "9521085134"));
        contactsArray.add(new CustomContactList("Rekha Lohar Udaipur", "9828504595"));
        contactsArray.add(new CustomContactList("Jagdish Ji Lohar Udaipur", "9828119641"));


        ContactAdapter adapter = new ContactAdapter(this, contactsArray);
        ListView listView = (ListView) findViewById(R.id.list);
        listView.setAdapter(adapter);
    }


}

public void onItemClick(AdapterView<?> adapterView, View view, int     position, long l)
{    
    // Get Phone Number    
    String phone = ((CustomContactList)adapter.getItem(position)).getmNumber();

    // Make a call
    Intent phoneIntent = new Intent(Intent.ACTION_CALL);
    phoneIntent.setData(Uri.parse("tel:" + phone));
    startActivity(phoneIntent);
}

这真的是一个极小的例子吗？阅读并考虑如何减少示例代码。