代碼如下：
public void Call(String number, Context context) {
try {
final Class<?> phoneFactoryClass = Class.forName("com.android.internal.telephony.PhoneFactory");
Method makeDefaultPhonesMethod = phoneFactoryClass.getDeclaredMethod("makeDefaultPhones", Context.class);
makeDefaultPhonesMethod.invoke(null, context);
Method getDefaultPhone = phoneFactoryClass.getDeclaredMethod("getDefaultPhone");
Object phone = getDefaultPhone.invoke(getDefaultPhone);
final Class<?> callManagerClass = Class.forName("com.android.internal.telephony.CallManager");
Method getInstanceMethod = callManagerClass.getDeclaredMethod("getInstance");
Object callManager = getInstanceMethod.invoke(getInstanceMethod);
final Class<?> phoneClass = Class.forName("com.android.internal.telephony.Phone");
Method registerPhoneMethod = callManagerClass.getDeclaredMethod("registerPhone", phoneClass);
registerPhoneMethod.invoke(callManager, phone);
Method maybeGetMethod = callManagerClass.getDeclaredMethod("getDefaultPhone");
Object phone1 = maybeGetMethod.invoke(callManager);
Method dial = phoneClass.getDeclaredMethod("dial", String.class);
dial.invoke(phone1, number);
} catch (ClassNotFoundException e) {
String string = e.getCause().toString();
Log.e("CallTest" ,string);
} catch (Exception e) {
String string = e.getCause().toString();
Log.e("CallTest" ,string);
}
}
2、在manifest中加如下權限
<manifest xmlns:android="/apk/res/android"
package="com.example.callphone"
android:sharedUserId="android.uid.system"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name= "andoird.permission.CALL_PHONE"/>
<uses-permission android:name= "andoird.permission.CALL_PRIVILEGED"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CONNECTIVITY_INTERNAL"/>
3、將生成的apk用系統簽名，不同的OS有不同的簽名，例如我用的是
java -jar signapk.jar platform.x509.pem platform.pk8 Callphone_unsigned.apk Callphone_signed.apk。其中platform.x509.pem platform.pk8在不同的OS中不同。
備註：用sharedUserId和系統簽名後，程序才有權限運行。同理，程序不能調試，只能log跟蹤。