androidx requestPermissionLauncher 导致 java.lang.IllegalArgumentException : Can only use lower 16 bits for requestCode

Question

我正在关注 Android docs example关于如何实现权限，建议使用androidx的RequestPermission和 requestPermissionLauncher API 用于:

allow the system to manage the request code that's associated with a permissions request

我基本上复制了示例代码:

private fun checkForPermissions() {

    // setup permission callback
    val requestPermissionLauncher =
        registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted: Boolean ->
            if (isGranted) {
                // success
                Log.d("RPMT", "success")
            } else {
                Log.d("RPMT", "failure")
                // failure
            }
        }

    // check permission
    if (ContextCompat.checkSelfPermission(
            this@MainActivity,
            Manifest.permission.CAMERA
        ) == PackageManager.PERMISSION_GRANTED
    ) {
        Log.d("RPMT", "carry on with flow")
    } else {
        requestPermissionLauncher.launch(
            Manifest.permission.CAMERA
        )
    }
}

但是在运行这个时，我得到一个

java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode

包含行的错误

requestPermissionLauncher.launch(

堆栈跟踪:

    java.lang.RuntimeException: Unable to start activity ComponentInfo{no.dwb.rpmt_kotlin_0/no.dwb.rpmt_kotlin_0.MainActivity}: java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3122)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3261)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1977)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6923)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:870)
...
     Caused by: java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode
        at androidx.fragment.app.FragmentActivity.checkForValidRequestCode(FragmentActivity.java:715)
        at androidx.fragment.app.FragmentActivity.validateRequestPermissionsRequestCode(FragmentActivity.java:730)
        at androidx.core.app.ActivityCompat.requestPermissions(ActivityCompat.java:500)
        at androidx.activity.ComponentActivity$2.onLaunch(ComponentActivity.java:192)
        at androidx.activity.result.ActivityResultRegistry$3.launch(ActivityResultRegistry.java:160)
        at androidx.activity.result.ActivityResultLauncher.launch(ActivityResultLauncher.java:42)
        at no.dwb.rpmt_kotlin_0.MainActivity.checkForPermissions(MainActivity.kt:40)
        at no.dwb.rpmt_kotlin_0.MainActivity.onCreate(MainActivity.kt:16)

我真的无法弄清楚这一点。我添加了 androidx gradle 依赖项

Answer 1

添加此依赖项以解决问题

implementation 'androidx.fragment:fragment:1.3.4'