To create your own content providers to get contacts details using Android Studio.
Android Studio(Min. required Artic Fox)
Step 1: Open Android Stdio and then click on File -> New -> New project.
Step 2: Then type the Application name as “Ex03″ and click Next.
Step 3: Then select the Empty Activity and click Next. Finally click Finish.
Step 4: Design layout in activity_main.xml.
Step 5: Get contacts details and Display details give in MainActivity file.
Step 6: Launch an emulator and run the application.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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=".MainActivity">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="get_contacts"
android:onClick="btnGetContactPressed"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="UsingOnClickInXml" />
</androidx.constraintlayout.widget.ConstraintLayout>
package com.example.exp3;
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.ContentResolver;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.View;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void btnGetContactPressed(View v){
getPhoneContacts();
}
private void getPhoneContacts(){
if(ContextCompat.checkSelfPermission(this , Manifest.permission.READ_CONTACTS)
!= PackageManager.PERMISSION_GRANTED)
{
ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.READ_CONTACTS}, 0) ;
}
ContentResolver contentResolver = getContentResolver();
Uri uri= ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
@SuppressLint("Recycle") Cursor cursor = contentResolver.query(uri, null , null,null,null);
Log.i("CONTACT_PROVIDER_DEMO","TOTAL # of Contacts ::: "+ cursor.getCount());
if (cursor.getCount() > 0) {
while(cursor.moveToNext()){
@SuppressLint("Range") String contactName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
@SuppressLint("Range") String contactNumber = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
Log.i("CONTACT_PROVIDER_DEMO","Contact Name ::: "+ contactName+" PH # :::"+ contactNumber);
}
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.exp3">
<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>
<uses-permission android:name="android.permission.WRITE_CONTACTS"></uses-permission>
<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.EXP3">
<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>
</manifest>
Thus a Simple Android Application create your own content providers to get contacts details using Android Studio is developed and executed successfully.