How to get Android Phone ServiceState - APK应用如何获得Android Phone的ServiceState，两种方法

应用侦听Android Phone ServiceState的方法这里介绍两种方式

方法一：侦听 Intent  TelephonyIntents.ACTION_SERVICE_STATE_CHANGED, 此Intent 是 sticky 类型，所以应用每次启动都可以获得。

 

    MyPhoneStateReceiver myreceiver = new MyPhoneStateReceiver();

    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_phone_status);        mTextView = (TextView)findViewById(R.id.mytext);                Log.d(TAG, "Start my process");                IntentFilter filter = new IntentFilter();        filter.addAction(ACTION_SERVICE_STATE_CHANGED);        this.registerReceiver(myreceiver, filter);            }

    private static final String ACTION_SERVICE_STATE_CHANGED = "android.intent.action.SERVICE_STATE";    /*     * Get a sticky Intent.     */    private class MyPhoneStateReceiver extends BroadcastReceiver {        @Override        public void onReceive(Context context, Intent intent) {            if (intent.getAction().equals(ACTION_SERVICE_STATE_CHANGED)) {                Log.d(TAG, "Intent Action: ACTION_SERVICE_STATE_CHANGED");                //ServiceState mServiceState =  ServiceState.newFromBundle(intent.getExtras());                //switch (mServiceState.getState()) {                switch(intent.getExtras().getInt("state")){                    case 0:                        mStringSer = "IN SERVICE ";                        break;                    case 1:                        mStringSer = "OUT OF SERVICE";                        break;                    case 2:                        mStringSer = "EMERGENCY ONLY";                        break;                    case 3:                        mStringSer = "POWER OFF";                        break;                    default:                        mStringSer = "UNKNOWN";                        break;                }                                //Waiting last info to print                printPhoneStatus();            }        }    }

注意在不用的时候取消注册：

    @Override      protected void onDestroy() {            this.unregisterReceiver(myreceiver);            super.onDestroy();      } 

需要增加READ_PHONE_STATE PERMISSION

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.testtools.phonestatus"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="9"        android:targetSdkVersion="17" />    <uses-permission android:name="android.permission.READ_PHONE_STATE" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.testtools.phonestatus.PhoneStatus"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

activity_phone_status.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".PhoneStatus" >    <TextView        android:id="@+id/mytext"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" /></RelativeLayout>

方法二： 在TelephonyManager中注册ListenerPhoneStateListener, 不过注意com.android.internal.telephony 是hide的，所以应用无法使用，只能曲线救国。TelephonyManager并不能直接被实例化，要获取它的实例，需要通过Context.getSystemService()，注册Listener通过listen()，mPhoneStateListener这个PhoneStateListener中重写onServiceStateChanged(ServiceState serviceState)方法。

        public String phoneServiceState() {        MyPhoneStateListener mPhoneStateListener = new MyPhoneStateListener();        TelephonyManager telMgr = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);          telMgr.listen(mPhoneStateListener, PhoneStateListener.LISTEN_SERVICE_STATE);        return mStringSer;            }

    /*     * public static final int STATE_IN_SERVICE = 0;     * public static final int STATE_OUT_OF_SERVICE = 1;     * public static final int STATE_EMERGENCY_ONLY = 2;     * public static final int STATE_POWER_OFF = 3;     * 有问题，有时候取不到     */    class MyPhoneStateListener extends PhoneStateListener{                  @Override          public void onServiceStateChanged(ServiceState mServiceState) {                        switch(mServiceState.getState()) {                case 0:                    mStringSer = "IN SERVICE ";                     break;                case 1:                    mStringSer = "OUT OF SERVICE";                    break;                case 2:                    mStringSer = "EMERGENCY ONLY";                    break;                case 3:                    mStringSer = "POWER OFF";                     break;                               }                    super.onServiceStateChanged(mServiceState);          }                }