Android學習筆記 - 撥打電話(PhoneCall)

1. 要能夠透過程式撥打電話，需要先取得CALL_PHONE的權限，因此需在AndroidManifest.xml允許存取android.permission.CALL_PHONE這個權限。

2.PhoneCall.java

package tw.nicky.PhoneCall;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class PhoneCall extends Activity {
 private Button callButton;
 private EditText editText;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        callButton = (Button)findViewById(R.id.callButton);
        editText = (EditText)findViewById(R.id.editText);
        
        //按下call按鈕
        callButton.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    String phoneNumber = editText.getText().toString();
    //啟動撥打電話程式
    Intent intentDial = new Intent("android.intent.action.CALL",Uri.parse("tel:"+phoneNumber));
    startActivity(intentDial);
   }
  });
    }
}

3. main.xml(Layout)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
<EditText 
android:id="@+id/editText" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content">
</EditText>
<Button 
android:id="@+id/callButton" 
android:text="Call" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content">
</Button>
</LinearLayout>

4. AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="tw.nicky.PhoneCall"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".PhoneCall"
                  android:label="@string/app_name">
            <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> 

5. 執行畫面