我正在使用Intent intent = new Intent(Intent.ACTION_CALL);从我的应用程序拨打电话.

一段时间后有什么办法可以终止通话？还是在ACTION_CALL开始之前设置一个计时器？

我正在使用Prasanta博客中的以下代码,但是由于某种原因,上下文在下面出现了错误.有什么建议么？

cannot be resolved

import java.lang.reflect.Method;

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.os.RemoteException;

import android.telephony.PhoneStateListener;

import android.telephony.TelephonyManager;

import android.util.Log;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;

import android.widget.TextView;

import android.widget.Toast;

import com.android.internal.telephony.ITelephony;

public class AnswerActivity extends Activity {

private static final String TAG = null;

/** Called when the activity is first created. */

private ITelephony telephonyService;

TelephonyManager telephonyManager;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

TelephonyManager tm = (TelephonyManager) context

.getSystemService(Context.TELEPHONY_SERVICE);{

try {

// Java reflection to gain access to TelephonyManager's

// ITelephony getter

Log.v(TAG, "Get getTeleService...");

Class c = Class.forName(tm.getClass().getName());

Method m = c.getDeclaredMethod("getITelephony");

m.setAccessible(true);

com.android.internal.telephony.ITelephony telephonyService =

(ITelephony) m.invoke(tm);

} catch (Exception e) {

e.printStackTrace();

Log.e(TAG,

"FATAL ERROR: could not connect to telephony subsystem");

Log.e(TAG, "Exception object: " + e);

}

}

}

}