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    Practical 19

    Uploaded by

    aniruddhaajagekar

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd

    Practical 19

    Uploaded by

    aniruddhaajagekar
    7 views4 pages

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    © © All Rights Reserved

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    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    7 views4 pages

    Practical 19

    Uploaded by

    aniruddhaajagekar

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 4

    Practical 19

    Q1)
    XML file
    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MainActivity"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >
    <ListView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/listview"
    />
    <Button
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:text="Click to Display"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="40dp"
    android:id="@+id/btn"
    />
    </RelativeLayout>

    JAVA FILE
    package com.example.practical191;
    import static android.Manifest.permission.*;
    import androidx.appcompat.app.AppCompatActivity;
    import androidx.core.app.ActivityCompat;
    import androidx.core.content.ContextCompat;
    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.view.View;
    import android.widget.ArrayAdapter;
    import android.widget.Button;
    import android.widget.ListAdapter;
    import android.widget.ListView;

    import java.util.ArrayList;

    public class MainActivity extends AppCompatActivity {


    ListView list;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    list = findViewById(R.id.listview);
    Button btn = findViewById(R.id.btn);
    btn.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
    checkPermission();
    }
    });
    }

    public void checkPermission(){


    if(ContextCompat.checkSelfPermission(this,READ_CONTACTS) !=
    PackageManager.PERMISSION_GRANTED)
    {
    ActivityCompat.requestPermissions(this,new String[]{READ_CONTACTS},1);
    }
    else{
    ArrayList<String> contact = new ArrayList<>();
    Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
    ContentResolver cr = getContentResolver();
    Cursor cursor = cr.query(uri,null,null,null,null,null);
    if(cursor.getCount()>0){
    while(cursor.moveToNext()){

    @SuppressLint("Range") String contactName =


    cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPL
    AY_NAME));
    @SuppressLint("Range") String contactNumber =
    cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUM
    BER));
    contact.add(contactName+"\n"+contactNumber);
    list.setAdapter(new
    ArrayAdapter<>(this,android.R.layout.simple_dropdown_item_1line,contact));
    }
    }
    }
    }
    }
    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"/>
    <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.Practical191"
    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>
    OUTPUT:-

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