如何在 Android 应用中添加新联系人?
androidapps/applicationsmobile development更新于 2026/2/14 4:07:17
此示例演示了如何在 Android 应用中添加新联系人。
步骤 1 − 在 Android Studio 中创建一个新项目，前往"文件"->"新建项目"，并填写所有必需的详细信息以创建新项目。
步骤 2 − 将以下代码添加到 res/layout/activity_main.xml
<? 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 :layout_margin= "16dp" android :orientation= "vertical" tools :context= ".MainActivity" > <EditText android :id= "@+id/etContactName" android :layout_width= "match_parent" android :layout_height= "wrap_content" android :hint= "Contact name" android :inputType= "text" /> <EditText android :id= "@+id/etContactNumber" android :layout_width= "match_parent" android :layout_height= "wrap_content" android :hint= "Contact number" android :inputType= "number" /> <Button android :layout_width= "match_parent" android :layout_height= "wrap_content" android :onClick= "addContact" android :text= "ADD" /> </LinearLayout>
步骤 3 − 将以下代码添加到 src/MainActivity
package app.tutorialspoint.com.sample ;
import android.app.Activity ;
import android.content.Intent ;
import android.os.Bundle ;
import android.provider.ContactsContract ;
import android.support.v7.app.AppCompatActivity ;
import android.view.View ;
import android.widget.EditText ;
import android.widget.Toast ;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate (Bundle savedInstanceState) {
super .onCreate(savedInstanceState) ;
setContentView(R.layout. activity_main ) ;
}
public void addContact (View view) {
EditText etContactName = findViewById(R.id. etContactName ) ;
EditText etContactNumber = findViewById(R.id. etContactNumber ) ;
String name = etContactName.getText().toString() ;
String phone = etContactNumber.getText().toString() ;
Intent contactIntent = new Intent(ContactsContract.Intents.Insert. ACTION ) ;
contactIntent.setType(ContactsContract.RawContacts. CONTENT_TYPE ) ;
contactIntent
.putExtra(ContactsContract.Intents.Insert. NAME , name)
.putExtra(ContactsContract.Intents.Insert. PHONE , phone) ;
startActivityForResult(contactIntent , 1 ) ;
}
@Override
protected void onActivityResult ( int requestCode , int resultCode , Intent intent) {
super .onActivityResult(requestCode , resultCode , intent) ;
if (requestCode == 1 ) {
if (resultCode == Activity. RESULT_OK ) {
Toast. makeText ( this, "Added Contact" , Toast. LENGTH_SHORT ).show() ;
}
if (resultCode == Activity. RESULT_CANCELED ) {
Toast. makeText ( this, "Cancelled Added Contact" ,
Toast. LENGTH_SHORT ).show() ;
}
}
}
}
步骤 6 − 将以下代码添加到 androidManifest.xml
<? xml version= "1.0" encoding= "utf-8" ?> <manifest xmlns: android = "http://schemas.android.com/apk/res/android" package= "app.tutorialspoint.com.sample" > <uses-permission android :name= "android.permission.CALL_PHONE" /> <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/AppTheme" > <activity android :name= ".MainActivity" > <intent-filter> <action android :name= "android.intent.action.MAIN" /> <category android :name= "android.intent.category.LAUNCHER" /> </intent-filter> </activity> <receiver android :name= ".DeviceAdmin" android :description= "@string/app_description" android :label= "@string/app_name" android :permission= "android.permission.BIND_DEVICE_ADMIN" > <meta-data android :name= "android.app.device_admin" android :resource= "@xml/policies" /> <intent-filter> <action android :name= "android.app.action.DEVICE_ADMIN_ENABLED" /> </intent-filter> </receiver> </application> </manifest>
让我们尝试运行您的应用程序。假设您已将实际的 Android 移动设备连接到电脑。要从 Android Studio 运行该应用程序，请打开项目的某个活动文件，然后点击工具栏上的"运行"图标 
。选择您的移动设备作为选项，然后勾选将显示默认屏幕的移动设备 –
