APK: 拨号、广播监听电话的状态-TelephonyManager(电话管理器)
一、实现手机电话状态的监听,主要依靠两个类:TelephoneManger和PhoneStateListener
1.1、TelephonseManger提供了取得手机基本服务的信息的一种方式。因此应用程序可以使用TelephonyManager来探测手机基本服务的情况。
应用程序可以注册listener来监听电话状态的改变。我们不能对TelephonyManager进行实例化,只能通过获取服务的形式:
Context.getSystemService(Context.TELEPHONY_SERVICE);
注意:对手机的某些信息进行读取是需要一定许可(permission)的。
1.2、主要静态成员常量:(它们对应PhoneStateListener.LISTEN_CALL_STATE所监听到的内容)
通过PhoneStateListener的回调方法onCallStateChanged(int state, String incomingNumber) 实现来电的监听
int CALL_STATE_IDLE 空闲状态,没有任何活动。
int CALL_STATE_OFFHOOK 摘机状态,至少有个电话活动。该活动或是拨打(dialing)或是通话,或是 on hold。并且没有电话是ringing or waiting
int CALL_STATE_RINGING 来电状态,电话铃声响起的那段时间或正在通话又来新电,新来电话不得不等待的那段时间。
二、监听来电去电能干什么?
2.1、能够对监听到的电话做个标识,告诉用户这个电话是诈骗、推销、广告什么的
2.2、能够针对那些特殊的电话进行自动挂断,避免打扰到用户
三、贴代码时间
3.1、AndroidMainfest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.gatsby.xhringupphone">
<!--CONTACTS 联系人-->
<!--允许程序从非系统拨号器里输入电话号码-->
<uses-permission android:name="android.permission.CALL_PHONE" />
<!--允许读取手机状态的权限-->
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<!-- 允许程序读取用户联系人数据 -->
<uses-permission android:name="android.permission.READ_CONTACTS" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".PhoneReceiver">
<!--android中的级别-1000~1000-->
<intent-filter android:priority="1000">
<action android:name="android.intent.action.PHONE_STATE" />
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>
</application>
</manifest>
3.2、activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<Button
android:id="@+id/btn1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="btn1->跳转拨号应用"
android:textSize="32sp" />
<Button
android:id="@+id/btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="btn2->直接拨号"
android:textSize="32sp" />
</LinearLayout>
3.3、MainActivity.java 拨号
package com.gatsby.xhringupphone;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import java.io.DataInputStream;
import java.io.DataOutputStream;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
Button btn1, btn2, btn3, btn4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
public void initView() {
btn1 = (Button) findViewById(R.id.btn1);
btn2 = (Button) findViewById(R.id.btn2);
btn1.setOnClickListener(this);
btn2.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn1:
//跳转到拨号应用
Uri uri = Uri.parse("tel:10086");
Intent intent1 = new Intent(Intent.ACTION_DIAL, uri);
startActivity(intent1);
break;
case R.id.btn2:
call("10086");
break;
}
}
public void call(String number) {
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:" + number));
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
startActivity(intent);
}
@Override
protected void onDestroy() {
super.onDestroy();
//RootCommand("pm clear com.android.dialer ");
}
private void RootCommand(String cmd) {
Process process = null;
DataOutputStream os = null;
DataInputStream is = null;
try {
process = Runtime.getRuntime().exec("su");
os = new DataOutputStream(process.getOutputStream());
os.writeBytes(cmd + "\n");
os.writeBytes("exit\n");
os.flush();
int aa = process.waitFor();
is = new DataInputStream(process.getInputStream());
byte[] buffer = new byte[is.available()];
is.read(buffer);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (os != null) {
os.close();
}
if (is != null) {
is.close();
}
process.destroy();
} catch (Exception e) {
}
}
}
}
3.4、PhoneReceiver.java 电话监听广播
package com.gatsby.xhringupphone;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
public class PhoneReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)) {
String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
Log.d("gatsby", "call OUT:" + phoneNumber);
} else {
TelephonyManager tm = (TelephonyManager) context.getSystemService(Service.TELEPHONY_SERVICE);
tm.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
}
}
PhoneStateListener listener = new PhoneStateListener() {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
super.onCallStateChanged(state, incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
//挂断 空闲 无任何状态时
Log.d("gatsby", "aaaa");
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
//接听 通话 接起电话时
Log.d("gatsby", "bbbb");
break;
case TelephonyManager.CALL_STATE_RINGING:
//响铃:来电号码
//输出来电号码 电话进来时
Log.d("gatsby", "cccc");
break;
}
}
};
}

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