Android 电话拨号

以下案例模拟android电话拨号器的实现

AndroidManifest.xml清单列表:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.ljq.phone"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MyList" android:label="@string/contact_title">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-sdk android:minSdkVersion="7" />
    <uses-permission android:name="android.permission.CALL_PHONE"/>
</manifest>

main.xml布局文件:

<?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">
    <TextView android:layout_width="fill_parent"
        android:layout_height="wrap_content" 
        android:text="请输入电话号码" />
    <EditText android:layout_width="fill_parent"
        android:layout_height="wrap_content" 
        android:id="@+id/phone" />
    <Button android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:text="拔打此号码"
        android:id="@+id/button" />
</LinearLayout>

MyList.java类:

package iaiai.test;

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 MyList extends Activity {

  private EditText phone = null;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    phone = (EditText) this.findViewById(R.id.phone);
    Button button = (Button) this.findViewById(R.id.button);
    button.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        String tel = phone.getText().toString();
        // 方法一， 使用Intent目的： 激活android组件
        // Intent intent=new Intent();
        // intent.setAction("android.intent.action.CALL");
        // intent.setData(Uri.parse("tel:"+tel));
        // 方法二
        Intent intent = new Intent("android.intent.action.CALL", Uri
            .parse("tel:" + tel));
        // 方法的内部会自动为intent对象设置类别:android.intent.category.DEFAULT
        startActivity(intent);
      }
    });
  }

}

运行结果：

[img]http://dl.iteye.com/upload/attachment/491065/7fe453cf-6a5a-3715-96af-0a3789137f3b.png[/img]

[img]http://dl.iteye.com/upload/attachment/491069/738fb03a-e3eb-342e-80ec-14d053b01a12.png[/img]