如何监听System.exit(0)的调用栈

安卓程序员_谢伟光2026-01-01 16:25

Kotlin 复制代码

private fun installShutdownHookForDebug() {
    try {
        Runtime.getRuntime().addShutdownHook(
            Thread(
                {
                    try {
                        val stacks = Thread.getAllStackTraces()
                        Log.e("ExitHook", "VM shutdown hook running, threads=${stacks.size}")
                        for ((thread, stack) in stacks) {
                            Log.e(
                                "ExitHook",
                                "thread='${thread.name}' state=${thread.state} daemon=${thread.isDaemon} id=${thread.id}\n" +
                                    stack.joinToString(separator = "\n") { "  at $it" }
                            )
                        }
                    } catch (t: Throwable) {
                        Log.e("ExitHook", "Failed dumping thread stacks", t)
                    }
                },
                "ExitHook",
            ),
        )
        Log.i("ExitHook", "Installed shutdown hook (debug only)")
    } catch (t: Throwable) {
        Log.w("ExitHook", "Failed to install shutdown hook", t)
    }
}

在Application中的oncreate中调用就行

经过测试我看到了如下日志

Kotlin 复制代码

2025-12-31 17:41:36.556 20049-20217 ExitHook                com.omnicast.androidtv               E  thread='Thread-11' state=WAITING daemon=false id=739 (Explain with AI)
                                                                                                      at java.lang.Object.wait(Native Method)
                                                                                                      at java.lang.Object.wait(Object.java:422)
                                                                                                      at java.lang.Thread.join(Thread.java:1262)
                                                                                                      at java.lang.Thread.join(Thread.java:1338)
                                                                                                      at java.lang.Runtime.exit(Runtime.java:160)
                                                                                                      at java.lang.System.exit(System.java:1496)
                                                                                                      at xxxx.run(Unknown Source:44)