Android：電話撥號器

 

 PhoneActivity.java

public class PhoneActivity extends Activity implements OnClickListener {
    /**
     * Button 呼出電話按鈕
     */
    private Button btn_callon;
    /**
     * EditText 號碼輸入框
     */
    private EditText et_phoneNum;
    /**
     * String 用戶輸入電話號碼字符串
     */
    private String phoneNum;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        initView();
        btn_callon.setOnClickListener(this);
    }

    /**
     * 初始化界面：獲取組件
     */
    public void initView() {
        btn_callon = (Button) findViewById(R.id.btn_id_phone_callon);
        et_phoneNum = (EditText) findViewById(R.id.et_id_phone_phoneNum);

    }

    public void onClick(View v) {
        phoneNum = et_phoneNum.getText().toString();
        if (phoneNum != null && !"".equals(phoneNum.trim())) { // 判斷手機號是否爲空
            Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"// 把tel前綴傳給系統之後，操作系統會自動調用撥號服務來撥打該號碼
                    + phoneNum));
            startActivity(intent);

        }
    }
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        style="@style/wrap_content"
        android:text="@string/tv_text_phone_phonetext" />

    <EditText
        android:id="@+id/et_id_phone_phoneNum"
        style="@style/fill_parent"
        android:inputType="number"
        android:singleLine="true" />

    <Button
        android:id="@+id/btn_id_phone_callon"
        style="@style/wrap_content"
        android:text="@string/btn_text_phone_callon" />

</LinearLayout>

strings.xml

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

    <string name="tv_text_phone_phonetext">請輸入電話號碼:</string>
    <string name="btn_text_phone_callon">呼出電話</string>
    <string name="app_name">Phone</string>

</resources>

style.xml

 

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

    <style name="wrap_content">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
    </style>

    <style name="fill_parent">
        <item name="android:layout_width">fill_parent</item>
        <item name="android:layout_height">wrap_content</item>
    </style>

</resources>

AndroidManifest.xml

 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fisnail"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" />
    <!-- 撥打電話權限 -->
    <uses-permission android:name="android.permission.CALL_PHONE" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".PhoneActivity"
            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>

</manifest>