从广播接收器启动 activity 意图显示错误 activity

Question

我正在制作一个库，可用于将破解和进入检测合并到任何应用程序中

有一个 arduino 设置为房子的闹钟，它会在触发时向特定 phone 发送短信

在我的 sdk 中，我注册了一个短信接收器，它在收到带有特定文本的短信时，应该显示全屏 activity（也在锁屏顶部），这将提醒用户

我创建了一个应用程序来测试此行为

应用程序包是：com.example.demo

图书馆的包是：com.example.sdk

短信接收者看起来像这样：

class SMSReceiver : BroadcastReceiver() {
    companion object {
        const val TAG = "SMSReceiver"
    }

    private val logger by lazy { Injections.logger }

    override fun onReceive(context: Context?, intent: Intent?) {
        logger.log(TAG) { "Got sms" }
        val ctx = context ?: return
        val bundle = intent?.extras ?: return
        val format = bundle.getString("format") ?: return
        val pdus = (bundle["pdus"] as? Array<*>) ?: return
        for (idx in pdus.indices) {
            val pdu = pdus[idx] as? ByteArray ?: continue
            val msg = SmsMessage.createFromPdu(pdu, format)
            if (msg.messageBody.startsWith("theft event", true)) {
                logger.log(TAG) { "Got theft event" }
                abortBroadcast()
                showTheftActivity(ctx, msg.messageBody)
                break
            }
        }
    }

    private fun showTheftActivity(context: Context, messageBody: String) {
        val intent = Intent(context, TheftActivity::class.java)
        intent.addFlags(Intent.FLAG_FROM_BACKGROUND)
            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
//            .addCategory(Intent.CATEGORY_LAUNCHER)

        val location = messageBody.split(" ").getOrNull(2)
        if (location != null) {
            val coords = location.split(",")
            if (coords.size == 2) {
                val x = coords[0].toBigDecimalOrNull()
                val y = coords[1].toBigDecimalOrNull()
                if (x != null && y != null) {
                    intent.putExtra(TheftActivity.X, x.toString())
                    intent.putExtra(TheftActivity.Y, y.toString())
                }
            }
        }
        context.startActivity(intent)
    }
}

应该显示在所有内容之上的 activity 是这样的：

class TheftActivity : Activity() {
    companion object {
        const val X = "locationX"
        const val Y = "locationY"
    }

    private val x: String? by lazy { intent.getStringExtra(X) }
    private val y: String? by lazy { intent.getStringExtra(Y) }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_theft)
        val location = findViewById<Button>(R.id.locate)
        if (x != null && y != null) {
            location.setOnClickListener { Toast.makeText(applicationContext, "Going to $x , $y", Toast.LENGTH_SHORT).show() }
            location.isEnabled = true
            finish()
        } else {
            location.isEnabled = false
        }
        findViewById<Button>(R.id.cancel).setOnClickListener {
            finish()
        }
        turnScreenOnAndKeyguardOff()
    }

    private fun turnScreenOnAndKeyguardOff() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
            setShowWhenLocked(true)
            setTurnScreenOn(true)
        } else {
            window.addFlags(
                WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
                        or WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
            )
        }

        with(getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                requestDismissKeyguard(this@TheftActivity, null)
            }
        }
    }

    override fun onDestroy() {
        super.onDestroy()
        turnScreenOffAndKeyguardOn()
    }

    private fun turnScreenOffAndKeyguardOn() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
            setShowWhenLocked(false)
            setTurnScreenOn(false)
        } else {
            window.clearFlags(
                WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
                        or WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
            )
        }
    }
}

SDK 的 android 清单包含以下内容：

   <application>
        <activity
            android:name=".ui.TheftActivity"
            android:configChanges="orientation|keyboardHidden|screenSize"
            android:excludeFromRecents="true"
            android:label="@string/title_activity_theft"
            android:showOnLockScreen="true"
            android:theme="@style/Theme.Sdk.Fullscreen" />

        <receiver
            android:name=".receivers.SMSReceiver"
            android:enabled="true"
            android:exported="true"
            android:permission="android.permission.BROADCAST_SMS">
            <intent-filter>
                <action android:name="android.provider.Telephony.SMS_RECEIVED" />
            </intent-filter>
        </receiver>
    </application>

在模拟器上测试时，我发送短信触发盗窃事件

如果用于测试的 activity（com.example.demo 包中的那个）没有关闭，那么它会被带到前面，但是如果它被关闭，则什么也不会发生（尽管我确实看到了来自接收者的日志消息）

如何让我的短信接收器打开 TheftActivity 而不是主程序包中的主 activity？

编辑：如果有帮助，盗窃 activity 似乎开始然后立即被摧毁

Answer 1

由于 Android Q

中实施的限制，系统似乎无法将 activity 带到前台

使用 Android Q，如果您的应用不包含下面 link 中列出的例外情况，则无法从后台自动启动 activity。

https://developer.android.com/guide/components/activities/background-starts

可能的解决方案：

从广播接收器启动 activity 意图显示错误 activity

Starting an activity intent from a broadcast receiver shows the wrong activity

android

broadcastreceiver

android-intent