phonecall——class

src/MyApplication/app/src/main/java/com/example/myapplication/PhoneDto.java

@@ -0,0 +1,40 @@
+package com.example.myapplication;
+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;
+    }
+}

src/MyApplication/app/src/main/java/com/example/myapplication/PhoneUtil.java

@@ -0,0 +1,40 @@
+package com.example.myapplication;
+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;
+    }
+}