Android: Make A Phone Call - Gọi Điện Thoại

activity_main.xml

Java Android 2017

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

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <TextView
            android:text="Phone number:"
            android:textSize="20sp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:layout_weight="1"
            android:layout_marginLeft="10dp"
            />

        <EditText
            android:id="@+id/edt_num"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:layout_marginLeft="10dp"
            android:gravity="center"
            android:textColor="#ff0000"
            android:layout_weight="1"
            android:textSize="20sp"
            />
    </LinearLayout>

    <Button
        android:id="@+id/btn_call"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="Call" />
</FrameLayout>

MainActivity.java

Java Android 2017

package com.example.lonely.demophonecall;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;


public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private EditText edtNum;
    private Button btnCall;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        edtNum = (EditText)findViewById(R.id.edt_num);
        btnCall = (Button)findViewById(R.id.btn_call);
        btnCall.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.btn_call:
                //TO DO
                Intent intent = new Intent(android.content.Intent.ACTION_DIAL, Uri.parse("tel:"+edtNum.getEditableText().toString()));
                startActivity(intent);
                break;
            default:
                break;
        }
    }
}

AndroidManifest.xml

Java Android 2017

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

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        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>
    </application>
    <uses-permission android:name="android.permission.CALL_PHONE" />
</manifest>