一文吃透Android如何处理全局异常

class GlobalCrashHandler : Thread.UncaughtExceptionHandler {  
    // 原生的默认处理器（最后要交给它处理）  
    private val defaultHandler = Thread.getDefaultUncaughtExceptionHandler()  

    override fun uncaughtException(thread: Thread, throwable: Throwable) {  
        // 1. 记录崩溃日志  
        logCrash(throwable)  
        // 2. 上传到服务器  
        uploadCrash(throwable)  
        // 3. 优雅退出（可选重启）  
        exitAppGracefully()  
        // 4. 调用默认处理器（触发崩溃弹窗）  
        defaultHandler?.uncaughtException(thread, throwable)  
    }  

    private fun logCrash(e: Throwable) {  
        Log.e("Crash", "全局崩溃: ", e)  
    }  

    private fun uploadCrash(e: Throwable) {  
        // 使用 Retrofit 或 OkHttp 上报到服务器  
    }  

    private fun exitAppGracefully() {  
        // 关闭所有 Activity  
        android.os.Process.killProcess(android.os.Process.myPid())  
        System.exit(1)  
    }  
}  

class MyApp : Application() {  
    override fun onCreate() {  
        super.onCreate()  
        // 设置全局异常捕获  
        Thread.setDefaultUncaughtExceptionHandler(GlobalCrashHandler())  
    }  
}  

<application  
    android:name=".MyApp"  
    ...>  
</application>  

Handler(Looper.getMainLooper()).post {  
    // 重启 MainActivity  
}  

private fun collectDeviceInfo(): Map<String, String> {  
    return mapOf(  
        "Model" to Build.MODEL,  
        "Android Version" to Build.VERSION.RELEASE  
    )  
}  

private fun saveCrashToFile(e: Throwable) {  
    val log = "Crash: ${e.stackTraceToString()}"  
    File(cacheDir, "crash.log").writeText(log)  
}  

private fun showUserFriendlyMessage() {  
    Toast.makeText(this, "程序遇到问题，即将重启", Toast.LENGTH_SHORT).show()  
}  

// build.gradle  
implementation 'com.google.firebase:firebase-crashlytics-ktx:18.6.0'  

FirebaseCrashlytics.getInstance().setCrashlyticsCollectionEnabled(true)