错误您是否在 AndroidManifest.xml 中声明了此活动？

Question

Pleas Can anyone explain whats the problem in this?

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.crud.datapegawai, PID: 4989 android.content.ActivityNotFoundException: Unable to find explicit activity class {com.crud.datapegawai/com.crud.datapegawai.AddEdit}; have you declared this activity in your AndroidManifest.xml? at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:2065) at android.app.Instrumentation.execStartActivity(Instrumentation.java:1727) at android.app.Activity.startActivityForResult(Activity.java:5320) at androidx.fragment.app.FragmentActivity.startActivityForResult(FragmentActivity.java:675) at android.app.Activity.startActivityForResult(Activity.java:5278) at androidx.fragment.app.FragmentActivity.startActivityForResult(FragmentActivity.java:662) at android.app.Activity.startActivity(Activity.java:5664) at android.app.Activity.startActivity(Activity.java:5617) at Z4 D236D9A2D102C5FE6AD1C50DA4BEC50Z.crud.datapegawai.MainActivity$1.onClick(MainActivity.java:46) at android.view.View.performClick(View.java:7448) at android.view.View.performClickInternal(View.java:7425) at android.view.View.access$3600(View.java:810) at android.view.View$PerformClick.run(View.java:28305) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:223) at android.app.ActivityThread.main(ActivityThread.java: 7656) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)

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

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.DataPegawai">

-->

 <activity android:name=".list_row" /> <activity android:name=".MainActivity" android:label="@string/app_name" android:theme="@style/Theme.DataPegawai.NoActionBar"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application>

Answer 1

From the log:

{com.crud.datapegawai/com.crud.datapegawai.AddEdit}; have you declared this activity in your AndroidManifest.xml

It means that there is an activity that you are using, but it was not declared in the android manifest. Every time you create an activity, you also need to declare this activity in the android manifest file. As you can see in your android manifest:

<activity android:name=".list_row" />
<activity
    android:name=".MainActivity"
    android:label="@string/app_name"
    android:theme="@style/Theme.DataPegawai.NoActionBar">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

There is a <activity> declaration. So in order to fix your problem, you need to declare com.crud.datapegawai.AddEdit in your manifest file. Something like this:

<activity android:name=".list_row" />
<activity android:name="com.crud.datapegawai.AddEdit" />
<activity
    android:name=".MainActivity"
    android:label="@string/app_name"
    android:theme="@style/Theme.DataPegawai.NoActionBar">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

For more details -> https://developer.android.com/guide/topics/manifest/manifest-intro