检测在Android上接听的去电 [英] Detecting outgoing call answered on Android

问题描述

我知道这个问题已经被问了很多遍了，但是没有答案，但是我仍然希望有人终于解决了这个问题.

I know this has been asked many times already, with no answers, but I still hope that someone has finally solved the problem.

问题:我有一个运行Android 2.3的非root用户设备.我需要创建一个服务，该服务:

The problem: I have a non-rooted device running Android 2.3. I need to create a service which:

1. 打个电话；
2. 等待直到呼叫被应答；
3. 在接听电话后(有超时)挂断电话；

与其他许多人一样，我也陷入了#2的困境.以下是曾经建议的解决方案的摘要:

Like many others, I've got stuck with #2. Below is the summary of the solutions ever suggested:

• 使用PhoneStateListener(最受欢迎):不起作用，对于拨出电话，它无法检测到我需要的东西.
• 使用 com.android.internal.telephony.CallManager 及其方法，例如 registerForPreciseCallStateChanged (例如，此处)./li>
• 检测传出的铃声(链接):作者-

• Use PhoneStateListener (most popular): does not work, for an outgoing call it cannot detect what I need.
• Use com.android.internal.telephony.CallManager and its methods like registerForPreciseCallStateChanged (e.g., this one): does not work, no phones are registered within it, so the events do not fire.
• Use com.android.internal.telephony.PhoneFactory to obtain a com.android.internal.telephony.Phone instance (which is the key to everything): does not work, the factory is not initialized; attempts to initialize it with a makeDefaultPhones call result in a security exception (like here).
• Detect the outgoing ringtone (link): the author - Dany Poplawec - states that detecting ringtones may help to solve the problem, but does not provide any details, so I was not able to try this technique.

看来一切都已经尝试过了，但是仍然有另外一个技巧可以救我:)

It looks like everything has been tried already, but there still may be one more trick that will save me :)

推荐答案

如果您遵循一步一步，就像:

1. 使用平台证书对应用程序进行签名.这需要执行以下步骤:
   • 将 android:sharedUserId ="android.uid.phone" 添加到apk清单的清单标签中.
   • 在清单的应用程序标签中添加 android:process ="com.android.phone" .
   • 您可能需要为清单添加一些额外的权限，并且还需要在项目的"Android Lint首选项"中更改 ProtectedPermission 的严重性.
   • 从{Android Source}/build/target/product/security中获得platform.pk8 + platform.x509.pem(我已经在 https://android.googlesource.com/platform/build/+/android-4.4.4_r1/target/product/security/)
   • 从> https://github.com/getfatday/keytool-importkeypair 下载keytool-importkeypair
   • 使用以下脚本通过以下命令获取平台的密钥库: keytool-importkeypair -k google_certificate.keystore -p android -pk8 platform.pk8 -cert platform.x509.pem -alias platform .我在cygwin上运行了该脚本，并对脚本进行了少量修改.
   • 使用此密钥库对apk签名.

1. Signing the app with the platform certificate. This requires the following steps:
   • add android:sharedUserId="android.uid.phone" to the manifest-tag of your apk´s manifest.
   • add android:process="com.android.phone" to the application-tag of the manifest.
   • you may need to add a few extra permissions to your manifest, and will also need to change the severity for ProtectedPermission in the "Android Lint Preferences" of your project.
   • get the platform.pk8 + platform.x509.pem from {Android Source}/build/target/product/security (I have used the ones for 4.4.4r1 in https://android.googlesource.com/platform/build/+/android-4.4.4_r1/target/product/security/)
   • Download keytool-importkeypair from https://github.com/getfatday/keytool-importkeypair
   • Use this script to obtain the keystore for the platform with command: keytool-importkeypair -k google_certificate.keystore -p android -pk8 platform.pk8 -cert platform.x509.pem -alias platform . I ran it on cygwin, with a minor modification of the script.
   • Sign the apk using this keystore.

使用adb将应用程序安装为系统应用程序:

install the application as a system app using adb:

adb根

adb重新安装

adb push MyApp.apk/system/app

adb push MyApp.apk /system/app

adb shell chmod 644/systen/app/MyApp.apk

adb shell chmod 644 /systen/app/MyApp.apk

重新启动设备.

Restart the device.

我实际上已经在第二个项目符号中尝试了该解决方案，并且它对我也不起作用(在运行Kitkat的Galaxy S5上).第三个项目符号项目中的解决方案确实可以正常工作.无论包名称如何，该应用程序都以com.android.phone的身份运行，因此，如果要调试该应用程序，则需要附加到该进程.

I have actually tried the solution in the 2nd bullet and it does not work for me either (on a Galaxy S5 running Kitkat). The solution in the 3rd bullet item does work quite OK. Regardless of the package name, the app runs as com.android.phone , so you need to attach to that process if you want to debug the app.

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