Android Studio - Content Provider(통화기록 가져오기)

* AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.content_provider">

    <uses-permission android:name="android.permission.READ_CALL_LOG"></uses-permission> // 추가
    <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.Content_Provider">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

* activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <Button
            android:id="@+id/btnCall"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="통화 기록 가져오기"></Button>
        <EditText
            android:id="@+id/edtCall"
            android:layout_width="match_parent"
            android:layout_height="match_parent"></EditText>
    </LinearLayout>
    
</LinearLayout>

 

* MainActivity.java

package com.example.content_provider;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.Manifest;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.CallLog;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends AppCompatActivity {
    Button btnCall;
    EditText edtCall;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.READ_CALL_LOG}, MODE_PRIVATE);

        btnCall = (Button) findViewById(R.id.btnCall);
        edtCall = (EditText) findViewById(R.id.edtCall);

        btnCall.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                edtCall.setText(getCallHistory());
            }
        });
    }

    public String getCallHistory(){
        String[] callSet = new String[] { CallLog.Calls.DATE, CallLog.Calls.TYPE, CallLog.Calls.NUMBER, CallLog.Calls.DURATION };
        Cursor c = getContentResolver().query(CallLog.Calls.CONTENT_URI, callSet, null, null, null);

        if ( c == null)
        {
            return "통화기록 없음";
        }
        StringBuffer callBuff = new StringBuffer();
        callBuff.append("\n날짜 : 구분 : 전화번호 : 통화시간\n\n");
        c.moveToFirst();
        do{
            long callDate = c.getLong(0);
            SimpleDateFormat datePattern = new SimpleDateFormat("yyyy-MM-dd");
            String date_str = datePattern.format(new Date(callDate));
            callBuff.append(date_str + ":");
            if (c.getInt(1) == CallLog.Calls.INCOMING_TYPE)
            {
                callBuff.append("착신 :");
            }
            else
            {
                callBuff.append("발신 : ");
            }
            callBuff.append(c.getString(2)+ ":");
            callBuff.append(c.getString(3)+ "초\n");
        } while (c.moveToNext());
        c.close();
        return callBuff.toString();
    }
}

* 실행 화면