在 RINGING 手机状态下关闭 wifi

Posted 2023-04-15

【中文标题】在 RINGING 手机状态下关闭 wifi

【英文标题】：Turn off wifi on RINGING phone state

【发布时间】：2012-01-03 19:06:55

【问题描述】：

我正在开发一个应用程序，当手机状态为 RINGING 时，wifi 状态会关闭。

我的代码如下：

phonestateManifest.xml

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.phone.state"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk android:minSdkVersion="8" />
    <application android:icon="@drawable/ic_launcher" >
        <activity
            android:label="@string/app_name"
            android:name=".PhonestateActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />    
                <category android:name="android.intent.category.LAUNCHER" />    
                <action android:name="android.intent.action.PHONE_STATE" />
            </intent-filter>
        </activity>    
        <activity android:name=".WifitoggleActivity" />    
        <receiver android:name=".ServiceReceiver" />
    </application>    
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />    
    <uses-permission android:name="android.permission.UPDATE_DEVICE_STATS" />    
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />    
    <uses-permission android:name="android.permission.WAKE_LOCK" />    
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
</manifest>

PhonestateActivity.java

public class PhonestateActivity extends Activity 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button button1 = (Button) findViewById(R.id.button1);
        button1.setOnClickListener(new OnClickListener() 
            public void onClick(View v) 
                Intent intent = new Intent(PhonestateActivity.this,
                        ServiceReceiver.class);
                startActivity(intent);
            
        );
    

ServiceReceiver.java

public class ServiceReceiver extends BroadcastReceiver 
    @Override
    public void onReceive(Context context, Intent intent) 
        MyPhoneStateListener phoneListener = new MyPhoneStateListener();
        TelephonyManager telephony = (TelephonyManager);
        context.getSystemService(Context.TELEPHONY_SERVICE);
        telephony.listen(phoneListener, MyPhoneStateListener.LISTEN_CALL_STATE);
    

MyPhoneStateListener.java

public class MyPhoneStateListener extends PhoneStateListener 
    @SuppressWarnings("unused")
    private WifitoggleActivity ss;

    public void onCallStateChanged(int state, String incomingNumber) 
        switch (state) 
            case TelephonyManager.CALL_STATE_IDLE:
            Log.d("DEBUG", "IDLE");
            break;
            case TelephonyManager.CALL_STATE_RINGING: 
            ss = new WifitoggleActivity();
            Log.d("DEBUG", "RINGING");
            break;
            
        
    

WifitoggleActivity.java

public class WifitoggleActivity extends Activity 
    public WifitoggleActivity() 
        System.out.print("INSIDE WIFI");
    

    /** Called when the activity is first created. */
    private WifiManager wifiManager;

    @Override
    public void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        // setContentView(R.layout.main);
        wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
        if (wifiManager.isWifiEnabled()) 
            wifiManager.setWifiEnabled(false);
         else 
            wifiManager.setWifiEnabled(true);
        
    

代码只是在我的设备中强制关闭。是 Manifest 文件有问题吗？

请帮我找到解决办法。

提前谢谢各位。

【问题讨论】：

如果您需要指导，那么我们随时为您提供帮助。没有人有时间阅读所有这些代码。请具体说明。您是社区的新手，因此请记住未来。我也会对您有所帮助。可以你张贴你的日志猫

当然，先生.........正如你所说，我是这个社区的新手......我会发布我的 logcat

张贴你的日志猫，这将有助于轻松识别错误

11-22 16:52:41.200: D/AndroidRuntime(270): 关闭 VM 11-22 16:52:41.200: W/dalvikvm(270): threadid=1: 线程退出未捕获的异常 (group=0x4001d800) 11-22 16:52:41.229: E/AndroidRuntime(270): 致命异常: main 11-22 16:52:41.229: E/AndroidRuntime(270): android.content.ActivityNotFoundException: Unable查找明确的活动类 com.phone.state/com.phone.state.ServiceReceiver；您是否在 AndroidManifest.xml 中声明了此活动？ 11-22 16:52:41.229: E/AndroidRuntime(270): 在 android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1404)

11-22 16:52:41.229: E/AndroidRuntime(270): 在 android.app.Instrumentation.execStartActivity(Instrumentation.java:1378) 11-22 16:52:41.229: E/ AndroidRuntime(270): 在 android.app.Activity.startActivityForResult(Activity.java:2817) 11-22 16:52:41.229: E/AndroidRuntime(270): 在 android.app.Activity.startActivity(Activity.java:2923 ) 11-22 16:52:41.229: E/AndroidRuntime(270): 在 com.phone.state.PhonestateActivity$1.onClick(PhonestateActivity.java:22) 11-22 16:52:41.229: E/AndroidRuntime(270) ：在 android.view.View.performClick(View.java:2408)

【参考方案1】：

ServiceReceiver 是 BroadcastReceiver 而不是 Activity。您在第一个块中使用了错误的代码。

在您的代码中找到 onClick 处理程序：

public class PhonestateActivity extends Activity 

     /** Called when the activity is first created. */   
     @Override
     public void onCreate(Bundle savedInstanceState) 
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      Button button1= (Button)findViewById(R.id.button1);
      button1.setOnClickListener(new OnClickListener() 
        public void onClick(View v) 

然后去掉这两行：

        Intent intent = new Intent(PhonestateActivity.this,ServiceReceiver.class);
        startActivity(intent);

并将它们替换为

        IntentFilter intentFilter=new IntentFilter(Intent.ACTION_ANSWER);
        registerReceiver(new ServiceReceiver(),intentFilter);

因为 ServiceReceiver 不是一个活动。

已编辑

再添加一个权限：

 android.permission.PROCESS_OUTGOING_CALLS

改变

  <receiver android:name=".ServiceReceiver">
   <intent-filter>
     <action android:name=" android.intent.action.PHONE_STATE" />  
   </intent-filter>
  </receiver>

现在从 oncreate 方法中删除注册广播的两行 Check this link

【讨论】：

是的，我改变了，但应用程序直接发送广播，没有 UI...你可以检查清单文件，如果权限有任何不匹配......