To create your own content providers to get contacts details using Android Studio.
Android Studio(Latest Version)
Step 1: Open Android Stdio and then click on File -> New -> New project.
Step 2: Then type the Application name as “contentprovider″ and click Next.
Step 3: Then select the Minimum SDK as shown below and click Next.
Step 4: Then select the Empty Activity and click Next. Finally click Finish.
Step 5: Design layout in activity_main.xml.
Step 6: Get contacts details and Display details give in MainActivity file.
Step 7: Save and run the application.
/*
Program to print the contact name and phone number using content providers.
Developed by:Mathan M
Registeration Number :212221040102
*/
#MainAcitivity.java
package com.example.contactdetails;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
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;
import android.Manifest;
public class MainActivity extends AppCompatActivity {
private static final int PERMISSION_REQUEST_READ_CONTACTS = 1;
@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}, PERMISSION_REQUEST_READ_CONTACTS);
} else {
fetchContacts();
}
}
private void fetchContacts() {
ContentResolver contentResolver = getContentResolver();
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
Cursor cursor = contentResolver.query(uri, null, null, null, null);
if (cursor != null) {
Log.i("CONTACT_PROVIDER_DEMO", "TOTAL # of Contacts ::: " + cursor.getCount());
int displayNameIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
int numberIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
while (cursor.moveToNext()) {
String contactName = cursor.getString(displayNameIndex);
String contactNumber = cursor.getString(numberIndex);
Log.i("CONTACT_PROVIDER_DEMO", "Contact Name ::: " + contactName + " Ph # ::: " + contactNumber);
}
cursor.close();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == PERMISSION_REQUEST_READ_CONTACTS) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
fetchContacts();
} else {
Log.e("CONTACT_PROVIDER_DEMO", "Permission denied");
}
}
}
}
#activity_main.xml
<?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">
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="72dp"
android:text="Content Provider"
android:textSize="34sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.559"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="368dp"
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_toBottomOf="@+id/text" />
</androidx.constraintlayout.widget.ConstraintLayout>
#AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<uses-permission android:name="android.permission.WRITE_CONTACTS"/>
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.ContactDetails"
tools:targetApi="31">
<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.