Android打电话，挂电话

100%运行通过，有图有真相！！！

第一步：布局文件

第二步：权限

第三步：实现代码

package com.example.crazycall;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import android.net.Uri;
import android.os.Bundle;
import android.os.RemoteException;
import com.android.internal.telephony.ITelephony;
import android.app.Activity;
import android.app.Service;
import android.content.Intent;
import android.telephony.TelephonyManager;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

	private Button start_btn;
	private Button end_btn;
	private EditText phone_number;
	private ITelephony iTelephony;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		start_btn=(Button)findViewById(R.id.start_btn);
		end_btn=(Button)findViewById(R.id.end_btn);
		phone_number=(EditText)findViewById(R.id.phone_number);
		
		start_btn.setOnClickListener(new Button.OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				String phonenumber=phone_number.getText().toString();
				callPhoneNumber(phonenumber);
			}
		});
		
		end_btn.setOnClickListener(new Button.OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				closePhone();
			}
		});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
	
	private void callPhoneNumber(String string) {
		if (string.trim().length()!=0) {
			Intent intent=new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+string));
			startActivity(intent);
		} else {
			Toast.makeText(MainActivity.this, "不能为空", Toast.LENGTH_LONG).show();
		}
	}
	
	private void closePhone() {
		try {
			getTelephony();
			iTelephony.endCall();
		} catch (RemoteException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}
	
	public void getTelephony() {
		TelephonyManager telephonyManager=(TelephonyManager)getSystemService(Service.TELEPHONY_SERVICE);
		Class class1=TelephonyManager.class;
		Method getITelephonyMethod=null;
		try {
			getITelephonyMethod=class1.getDeclaredMethod("getITelephony", (Class[])null);
			getITelephonyMethod.setAccessible(true);
		} catch (SecurityException e) {
			// TODO: handle exception
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		
		try {
			iTelephony=(ITelephony)getITelephonyMethod.invoke(telephonyManager, (Object[])null);
		} catch (IllegalArgumentException e) {
			// TODO: handle exception
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			// TODO: handle exception
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}

}

注意：挂电话需要用到系统的ITelephony类，但是Google从Android2.1 SDK版本后，屏蔽了ITelephony类，在此附上此类代码，自行创建记事本，然后改文件名和扩展名。

NeighboringCellInfo.aidl文件（ITelephony类需要引用该文件）

/* //device/java/android/android/content/Intent.aidl
**
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/

package android.telephony;

parcelable NeighboringCellInfo;

ITelephony.aidl文件

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.internal.telephony;

import android.os.Bundle;
import java.util.List;
import android.telephony.NeighboringCellInfo;

/**
 * Interface used to interact with the phone.  Mostly this is used by the 
 * TelephonyManager class.  A few places are still using this directly.
 * Please clean them up if possible and use TelephonyManager insteadl.
 *
 * {@hide}
 */
interface ITelephony {

    /**
     * Dial a number. This doesn't place the call. It displays
     * the Dialer screen.
     * @param number the number to be dialed. If null, this
     * would display the Dialer screen with no number pre-filled.
     */
    void dial(String number);

    /**
     * Place a call to the specified number.
     * @param number the number to be called.
     */
    void call(String number);

    /**
     * If there is currently a call in progress, show the call screen.
     * The DTMF dialpad may or may not be visible initially, depending on
     * whether it was up when the user last exited the InCallScreen.
     *
     * @return true if the call screen was shown.
     */
    boolean showCallScreen();

    /**
     * Variation of showCallScreen() that also specifies whether the
     * DTMF dialpad should be initially visible when the InCallScreen
     * comes up.
     *
     * @param showDialpad if true, make the dialpad visible initially,
     *                    otherwise hide the dialpad initially.
     * @return true if the call screen was shown.
     *
     * @see showCallScreen
     */
    boolean showCallScreenWithDialpad(boolean showDialpad);

    /**
     * End call or go to the Home screen
     *
     * @return whether it hung up
     */
    boolean endCall();

    /**
     * Answer the currently-ringing call.
     *
     * If there's already a current active call, that call will be
     * automatically put on hold.  If both lines are currently in use, the
     * current active call will be ended.
     *
     * TODO: provide a flag to let the caller specify what policy to use
     * if both lines are in use.  (The current behavior is hardwired to
     * "answer incoming, end ongoing", which is how the CALL button
     * is specced to behave.)
     *
     * TODO: this should be a oneway call (especially since it's called
     * directly from the key queue thread).
     */
    void answerRingingCall();

    /**
     * Silence the ringer if an incoming call is currently ringing.
     * (If vibrating, stop the vibrator also.)
     *
     * It's safe to call this if the ringer has already been silenced, or
     * even if there's no incoming call.  (If so, this method will do nothing.)
     *
     * TODO: this should be a oneway call too (see above).
     *       (Actually *all* the methods here that return void can
     *       probably be oneway.)
     */
    void silenceRinger();

    /**
     * Check if we are in either an active or holding call
     * @return true if the phone state is OFFHOOK.
     */
    boolean isOffhook();

    /**
     * Check if an incoming phone call is ringing or call waiting.
     * @return true if the phone state is RINGING.
     */
    boolean isRinging();

    /**
     * Check if the phone is idle.
     * @return true if the phone state is IDLE.
     */
    boolean isIdle();

    /**
     * Check to see if the radio is on or not.
     * @return returns true if the radio is on.
     */
    boolean isRadioOn();

    /**
     * Check if the SIM pin lock is enabled.
     * @return true if the SIM pin lock is enabled.
     */
    boolean isSimPinEnabled();

    /**
     * Cancels the missed calls notification.
     */
    void cancelMissedCallsNotification(); 

    /**
     * Supply a pin to unlock the SIM.  Blocks until a result is determined.
     * @param pin The pin to check.
     * @return whether the operation was a success.
     */
    boolean supplyPin(String pin);

    /**
     * Handles PIN MMI commands (PIN/PIN2/PUK/PUK2), which are initiated
     * without SEND (so dial is not appropriate).
     * 
     * @param dialString the MMI command to be executed.
     * @return true if MMI command is executed.
     */
    boolean handlePinMmi(String dialString);

    /**
     * Toggles the radio on or off.
     */
    void toggleRadioOnOff();

    /**
     * Set the radio to on or off
     */
    boolean setRadio(boolean turnOn);

    /**
     * Request to update location information in service state
     */
    void updateServiceLocation();

    /**
     * Enable location update notifications.
     */
    void enableLocationUpdates();

    /**
     * Disable location update notifications.
     */
    void disableLocationUpdates();

    /**
     * Enable a specific APN type.
     */
    int enableApnType(String type);

    /**
     * Disable a specific APN type.
     */
    int disableApnType(String type);

    /**
     * Allow mobile data connections.
     */
    boolean enableDataConnectivity();

    /**
     * Disallow mobile data connections.
     */
    boolean disableDataConnectivity();

    /**
     * Report whether data connectivity is possible.
     */
    boolean isDataConnectivityPossible();

    Bundle getCellLocation();

    /**
     * Returns the neighboring cell information of the device.
     */
    List getNeighboringCellInfo();

     int getCallState();
     int getDataActivity();
     int getDataState();
}