Android studio基础练习07【获取手机通讯录】

一、结构搭建

二、代码实现

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.suke.getnameandphone">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.GetNameAndPhone">

        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <uses-permission android:name="android.permission.WRITE_CONTACTS" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
</manifest>

activity_main.xml

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.suke.getnameandphone.MainActivity">

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

</LinearLayout>

MainActivity

package com.suke.getnameandphone;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.Manifest;
import android.annotation.SuppressLint;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.content.ContentUris;
import android.content.ContentValues;
import android.widget.TextView;

import java.util.List;

public class MainActivity extends AppCompatActivity {

    private List<PhoneDto> phoneDtos;
    private ListView lv_main_list;

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

    /**
     * 检查权限
     */
    private void check() {
        //判断是否有权限
        if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_CONTACTS)
                != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_CONTACTS}, 201);
        } else {
            initViews();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 201) {
            initViews();
        } else {
            return;
        }
    }

    private void initViews() {
        PhoneUtil phoneUtil = new PhoneUtil(this);
        phoneDtos = phoneUtil.getPhone();
        lv_main_list = (ListView) findViewById(R.id.lv_main_list);
        MyAdapter myAdapter = new MyAdapter();
        lv_main_list.setAdapter(myAdapter);
        //给listview增加点击事件
        /*lv_main_list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                //拨打电话
                Intent intent = new Intent();
                intent.setAction("android.intent.action.CALL");
                intent.addCategory(Intent.CATEGORY_DEFAULT);
                intent.setData(Uri.parse("tel:"+phoneDtos.get(position).getTelPhone()));
                startActivity(intent);
            }
        });*/
    }

    //自定义适配器
    private class MyAdapter extends BaseAdapter {

        @Override
        public int getCount() {
            return phoneDtos.size();
        }

        @Override
        public Object getItem(int position) {
            return phoneDtos.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @SuppressLint("NewApi")
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            PhoneDto phoneDto = phoneDtos.get(position);
            LinearLayout linearLayout = new LinearLayout(MainActivity.this);
            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT);
            layoutParams.weight = 1;
            //序号
            TextView tv_id = new TextView(MainActivity.this);
            tv_id.setId(View.generateViewId());
            tv_id.setLayoutParams(layoutParams);
            tv_id.setText(phoneDto.getId());
            //姓名
            TextView tv_name = new TextView(MainActivity.this);
            tv_name.setId(View.generateViewId());
            tv_name.setLayoutParams(layoutParams);
            tv_name.setText(phoneDto.getName());
            //手机号
            TextView tv_num = new TextView(MainActivity.this);
            tv_num.setId(View.generateViewId());
            tv_num.setLayoutParams(layoutParams);
            tv_num.setText(phoneDto.getTelPhone());
            //视图显示
            linearLayout.addView(tv_id);
            linearLayout.addView(tv_name);
            linearLayout.addView(tv_num);
            return linearLayout;
        }
    }
}

PhoneDto

package com.suke.getnameandphone;

public class PhoneDto {
    private String id;          //序号
    private String name;        //联系人姓名
    private String telPhone;    //电话号码


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getTelPhone() {
        return telPhone;
    }

    public void setTelPhone(String telPhone) {
        this.telPhone = telPhone;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public PhoneDto() {
    }

    public PhoneDto(String id, String name, String telPhone) {
        this.id = id;
        this.name = name;
        this.telPhone = telPhone;
    }
}

PhoneUtil

package com.suke.getnameandphone;

import android.annotation.SuppressLint;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract;

import java.util.ArrayList;
import java.util.List;

public class PhoneUtil {
    //序号
    public final static String ID = ContactsContract.CommonDataKinds.Phone.CONTACT_ID;
    // 号码
    public final static String NUM = ContactsContract.CommonDataKinds.Phone.NUMBER;
    // 联系人姓名
    public final static String NAME = ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME;

    //上下文对象
    private Context context;
    //联系人提供者的uri
    private Uri phoneUri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;

    public PhoneUtil(Context context) {
        this.context = context;
    }

    //获取所有联系人
    public List<PhoneDto> getPhone() {
        List<PhoneDto> phoneDtos = new ArrayList<>();
        ContentResolver cr = context.getContentResolver();
        Cursor cursor = cr.query(phoneUri, new String[]{ID, NUM, NAME}, null, null, null);
        while (cursor.moveToNext()) {
            @SuppressLint("Range") PhoneDto phoneDto = new PhoneDto(cursor.getString(cursor.getColumnIndex(ID)), cursor.getString(cursor.getColumnIndex(NAME)), cursor.getString(cursor.getColumnIndex(NUM)));
            phoneDtos.add(phoneDto);
        }
        return phoneDtos;
    }
}

三、执行效果