Intent Activity Utils，未在清单中声明 - Kotlin，Android

Question

我正在尝试实现 Intent Activity Utils 作为 Kotlin 中的扩展函数。他们将从其他 Activity/Fragment 开始活动。请向我建议最好的方法()。

我试过这样解决那个问题：

在 Activity 中，我调用了这样的扩展函数：

     when (view.id) {
        PROFILE.actionViewId -> {
            // Start Activity normally
            startNewActivity(MyProfileActivity::class.java) 
        }
        PREPAID_RECHARGE.actionViewId -> {
            // Dont start activity  and crash
            startNewActivityForResult(RechargePrepaidActivity::class.java, RECHARGE_PREPAID_REQUEST_CODE) 
            // Start Activity normally 
            this.startActivityForResult(Intent(this, RechargePrepaidActivity::class.java), RECHARGE_PREPAID_REQUEST_CODE) 
        }
        TROUBLE_TICKETS.actionViewId -> {
            startNewActivity(TroubleTicketsActivity::class.java) // Start Activity normally
        }
        HELP.actionViewId -> {
            startNewActivity(HelpSectionActivity::class.java) // Start Activity normally
        }

IntentUtils.kt:

fun <T : BaseActivity> BaseActivity.startNewActivity(newActivity: Class<T>) {
    val intent = Intent(this, newActivity)
    this.startActivity(intent)
}

//fun BaseActivity.startNewActivity(newActivity: Class<*>) {
//    val intent = Intent(this, newActivity)
//    this.startActivity(intent)
//}

fun BaseActivity.startNewActivityForResult(newActivity: Class<*>, requestCode : Int) {
    val intent = Intent(this, newActivity::class.java)
    startActivityForResult(intent, requestCode)
}

fun BaseFragment.startNewActivity(newActivity: Class<*>) {
    val intent = Intent(this.requireActivity(), newActivity::class.java)
    this.startActivity(intent)
}

fun BaseFragment.startNewActivityForResult(newActivity: Class<*>, requestCode : Int) {
    val intent = Intent(this.requireActivity(), newActivity::class.java)
    startActivityForResult(intent, requestCode)
}

此外，Activity 在清单中声明 - Kotlin，Android

        <activity
        android:name=".ui.recharge.RechargePrepaidActivity"
        android:configChanges="locale|orientation|screenSize"
        android:screenOrientation="portrait" />

这 activity 正常启动：

    startNewActivity(MyProfileActivity::class.java) // use extend func
    startActivity(Intent(this, MyProfileActivity::class.java)) // use inherited Activity func

但是当我尝试创建相同的函数来通过请求代码为结果启动 activity 时它不起作用，当我使用继承的 Activity 函数 startActivityForResult() 时没问题

            // Dont start activity and crash
            startNewActivityForResult(RechargePrepaidActivity::class.java, RECHARGE_PREPAID_REQUEST_CODE) 
            // Start Activity normally 
            startActivistyForResult(Intent(this, RechargePrepaidActivity::class.java), RECHARGE_PREPAID_REQUEST_CODE)

奇怪的是，当我使用 IntentUtils.startNewActivityForResult() 应用程序时，
崩溃了 ActivityNotFoundException，但在正常使用 Fragment.startActivityForResult() 时，它没有这种行为：

Caused by: android.content.ActivityNotFoundException: 
     Unable to find explicit activity class {/java.lang.Class}; have you declared this activity in your AndroidManifest.xml?
    at ui.utils.view.IntentUtilsKt.startNewActivityForResult(IntentUtils.kt:19)
    at ui.main.hamburgerMenu.HamburgerMenuActivity.onClick(HamburgerMenuActivity.kt:117)

Answer 1

问题出在重复的 ::class.java 调用中：

错误：

fun BaseActivity.startNewActivityForResult(newActivity: Class<*>, requestCode : Int) {
    val intent = Intent(this, newActivity::class.java) //duplicated ::class.java
    startActivityForResult(intent, requestCode) 
 }

右：

fun BaseActivity.startNewActivityForResult(newActivity: Class<*>, requestCode : Int) {
    val intent = Intent(this, newActivity) // removed ::class.java
    startActivityForResult(intent, requestCode)
 }

Intent Activity Utils，未在清单中声明 - Kotlin，Android

Intent Activity Utils , not declarated in Manifest - Kotlin, Android

android

android-intent

kotlin

kotlin-extension

kotlin-android-extensions