android怎么实现自动接听

添加权限
<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE"/>

package com.xiawenquan.pic.demo.utils;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.KeyEvent;
import android.widget.TextView;

public class Auto_accept_callActivity extends Activity {
    TelephonyManager manager;
    String result = "监听电话状态：/n";
    TextView textView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        manager = (TelephonyManager) this.getSystemService(TELEPHONY_SERVICE);
        // 获取电话服务
        manager.listen(new MyPhoneStateListener(),
                PhoneStateListener.LISTEN_CALL_STATE);
        // 手动注册对PhoneStateListener中的listen_call_state状态进行监听
    }

    public void auto_accept_call() {
        Intent localIntent1 = new Intent(Intent.ACTION_HEADSET_PLUG);
        localIntent1.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
        localIntent1.putExtra("state", 1);
        localIntent1.putExtra("microphone", 1);
        localIntent1.putExtra("name", "Headset");
        this.sendOrderedBroadcast(localIntent1,
                "android.permission.CALL_PRIVILEGED");
        Intent localIntent2 = new Intent(Intent.ACTION_MEDIA_BUTTON);
        KeyEvent localKeyEvent1 = new KeyEvent(KeyEvent.ACTION_DOWN,
                KeyEvent.KEYCODE_HEADSETHOOK);
        localIntent2.putExtra("android.intent.extra.KEY_EVENT", localKeyEvent1);
        this.sendOrderedBroadcast(localIntent2,
                "android.permission.CALL_PRIVILEGED");
        Intent localIntent3 = new Intent(Intent.ACTION_MEDIA_BUTTON);
        KeyEvent localKeyEvent2 = new KeyEvent(KeyEvent.ACTION_UP,
                KeyEvent.KEYCODE_HEADSETHOOK);
        localIntent3.putExtra("android.intent.extra.KEY_EVENT", localKeyEvent2);
        this.sendOrderedBroadcast(localIntent3,
                "android.permission.CALL_PRIVILEGED");
        Intent localIntent4 = new Intent(Intent.ACTION_HEADSET_PLUG);
        localIntent4.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

        localIntent4.putExtra("state", 0);
        localIntent4.putExtra("microphone", 1);
        localIntent4.putExtra("name", "Headset");
        this.sendOrderedBroadcast(localIntent4,
                "android.permission.CALL_PRIVILEGED");
    }

    /***
     * 继承PhoneStateListener类，我们可以重新其内部的各种监听方法 然后通过手机状态改变时，系统自动触发这些方法来实现我们想要的功能
     */
    class MyPhoneStateListener extends PhoneStateListener {
        @Override
        public void onCallStateChanged(int state, String incomingNumber) {
            Log.v("log", "oncall state changed");
            switch (state) {
            case TelephonyManager.CALL_STATE_IDLE:
                result += " 手机空闲 ";
                break;
            case TelephonyManager.CALL_STATE_RINGING:
                result += " 手机铃响:" + incomingNumber;
                Log.v("log", result);
                Auto_accept_callActivity.this.auto_accept_call();
                break;
            case TelephonyManager.CALL_STATE_OFFHOOK:
                result += " 电话挂起 ";
            default:
                break;
            }
            super.onCallStateChanged(state, incomingNumber);
        }
    }
}