Question

我有一个以前工作过的简单活动，但现在失败并且因以下错误导致我的应用崩溃。我没有改变与活动有关的任何事情，所以我真的不确定这里出了什么问题。我看过类似的问题，但他们建议没有任何效果。

非常感谢任何想法。

05-15 22:13:31.381 14563-14563/com.hmadland.paranoia E/AndroidRuntime: FATAL EXCEPTION: main
                                                                   Process: com.hmadland.paranoia, PID: 14563
                                                                   android.content.ActivityNotFoundException: Unable to find explicit activity class {com.hmadland.paranoia/android.support.v7.widget.AppCompatButton}; have you declared this activity in your AndroidManifest.xml?
                                                                       at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1805)
                                                                       at android.app.Instrumentation.execStartActivity(Instrumentation.java:1523)
                                                                       at android.app.Activity.startActivityForResult(Activity.java:3968)
                                                                       at android.support.v4.app.BaseFragmentActivityApi16.startActivityForResult(BaseFragmentActivityApi16.java:54)
                                                                       at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:68)
                                                                       at android.app.Activity.startActivityForResult(Activity.java:3920)
                                                                       at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:751)
                                                                       at android.app.Activity.startActivity(Activity.java:4259)
                                                                       at android.app.Activity.startActivity(Activity.java:4227)
                                                                       at com.hmadland.paranoia.Profile$onCreate$2.onClick(Profile.kt:91)
                                                                       at android.view.View.performClick(View.java:5265)
                                                                       at android.view.View$PerformClick.run(View.java:21534)
                                                                       at android.os.Handler.handleCallback(Handler.java:815)
                                                                       at android.os.Handler.dispatchMessage(Handler.java:104)
                                                                       at android.os.Looper.loop(Looper.java:207)
                                                                       at android.app.ActivityThread.main(ActivityThread.java:5765)
                                                                       at java.lang.reflect.Method.invoke(Native Method)
                                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
                                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)

活动就像这样调用

 Target.setOnClickListener {
        val intent = Intent(this, Target::class.java)
        startActivity(intent)
    }

我的AndroidManifest.xml看起来像这样

<?xml version="1.0" encoding="utf-8"?>

<uses-permission android:name="android.permission.INTERNET"/>
//camera access stuff
<uses-feature android:name="android.hardware.camera2" android:required="true"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />

<application

    android:allowBackup="true"
    android:icon="@drawable/icon"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:screenOrientation="portrait"
        android:configChanges="orientation|keyboardHidden"
        android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:screenOrientation="portrait"
        android:configChanges="orientation|keyboardHidden"
        android:name=".Register" />
    <activity android:screenOrientation="portrait"
        android:configChanges="orientation|keyboardHidden"
        android:name=".Login" />
    <activity
        android:screenOrientation="portrait"
        android:configChanges="orientation|keyboardHidden"
        android:name=".Profile" />
    <activity
        android:screenOrientation="portrait"
        android:configChanges="orientation|keyboardHidden"
        android:name=".Target" />
    <activity
        android:screenOrientation="portrait"
        android:configChanges="orientation|keyboardHidden"
        android:name=".Inventory" />
    <activity
        android:screenOrientation="portrait"
        android:configChanges="orientation|keyboardHidden"
        android:name=".UpcomingGames">
    </activity>

    <provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="com.example.android.fileprovider"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/file_paths"></meta-data>
    </provider>


</application>

Answer 1

您忘了宣布您的活动。在应用程序标记下的清单中写下这个：

<activity android:screenOrientation="portrait"
    android:configChanges="orientation|keyboardHidden"
    android:name=".FragmentActivity" />

Answer 2

我通过替换

解决了这个问题

Target.setOnClickListener{
            val intent = Intent(this, Target::class.java)
              intent.putExtra("PlayerID", PlayerID)
            startActivity(intent)
        }

用这个

Target.setOnClickListener{
            val intent = Intent(this, com.hmadland.paranoia.Target::class.java)
              intent.putExtra("PlayerID", PlayerID)
            startActivity(intent)
        }

不太确定原因，但可能是按钮被称为目标和活动目标的命名问题。

以前工作活动现在提供ActivityNotFoundException

2 个答案: