在我的android中更改了项目packPage名称后，应用程序将强制关闭。为什么？

在这里，我更改了项目包名称，更改后项目成功安装在我的android手机上，但无法处理该应用程序，打开闪屏应用程序后将强制关闭。 请帮我解决。我的项目中有服务类

这是我的日志

2020-10-07 10:41:21.879 15614-15614/com.example.taskreminder E/HW-JPEG-DEC: [HME_JPEG_DEC_Delete](3321): HME_JPEG_DEC_Delete: decoder_ctx=null
2020-10-07 10:41:21.913 15614-15614/com.example.taskreminder E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.taskreminder, PID: 15614
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.taskreminder/com.example.taskreminder.ui.MainActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2793)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2864)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:156)
        at android.app.ActivityThread.main(ActivityThread.java:6517)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)
     Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class fragment
     Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
     Caused by: android.app.Fragment$InstantiationException: Unable to instantiate fragment com.github.ppartisan.simplealarms.ui.MainFragment: make sure class name exists, is public, and has an empty constructor that is public
        at android.app.Fragment.instantiate(Fragment.java:630)
        at android.app.Fragment.instantiate(Fragment.java:594)
        at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2309)
        at android.app.FragmentController.onCreateView(FragmentController.java:98)
        at android.app.Activity.onCreateView(Activity.java:6131)
        at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:389)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:788)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:738)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:495)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:426)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:377)
        at android.support.v7.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
        at com.example.taskreminder.ui.MainActivity.onCreate(MainActivity.java:15)
        at android.app.Activity.performCreate(Activity.java:6915)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2746)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2864)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:156)
        at android.app.ActivityThread.main(ActivityThread.java:6517)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)
     Caused by: java.lang.ClassNotFoundException: Didn't find class "com.github.ppartisan.simplealarms.ui.MainFragment" on path: DexPathList[[zip file "/data/app/com.example.taskreminder-2/base.apk"],nativeLibraryDirectories=[/data/app/com.example.taskreminder-2/lib/arm64, /system/lib64, /vendor/lib64, /system/vendor/lib64, /product/lib64]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        at android.app.Fragment.instantiate(Fragment.java:616)
        at android.app.Fragment.instantiate(Fragment.java:594) 
        at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2309) 
        at android.app.FragmentController.onCreateView(FragmentController.java:98) 
        at android.app.Activity.onCreateView(Activity.java:6131) 
        at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:389) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:788) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:738) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:495) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:426) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:377) 
        at android.support.v7.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469) 
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) 
        at com.example.taskreminder.ui.MainActivity.onCreate(MainActivity.java:15) 
        at android.app.Activity.performCreate(Activity.java:6915) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2746) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2864) 
        at android.app.ActivityThread.-wrap12(ActivityThread.java) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567) 
        at android.os.Handler.dispatchMessage(Handler.java:105) 
        at android.os.Looper.loop(Looper.java:156) 
        at android.app.ActivityThread.main(ActivityThread.java:6517) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832) 
2020-10-07 10:41:21.927 15614-15614/com.example.taskreminder I/Process: Sending signal. PID: 15614 SIG: 9

这是我的Android清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.taskreminder">

    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/logo"
        android:roundIcon="@drawable/logo"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".ui.splash_screen" android:theme="@style/Theme.AppCompat.Light.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        </activity>
        <activity android:name=".ui.MainActivity">

        </activity>
        <activity android:name=".ui.AddEditAlarmActivity" />
        <activity
            android:name=".ui.AlarmLandingPageActivity"
            android:theme="@style/AlertLandingPageTheme" />

        <service android:name=".service.LoadAlarmsService" />

        <receiver android:name=".service.LoadAlarmsReceiver" />
        <receiver android:name=".service.AlarmReceiver" />
        <receiver
            android:name=".service.BootReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter android:priority="${bootPriority}">
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

我认为您没有将java代码的所有这些包名都更改为

com.example.taskrementer.ui

（新包名正确吗？）。您需要通过搜索关键字

com.github.ppartisan.simplealarms

确保没有旧的包名。您可以参考此解决方案：

Q：旧的包名是什么？com.github.ppartisan.simplealarms？问：新的包名是什么？您是否在Android Studio中对旧名称（.java和.xml文件）、“清理”和“重建”所有内容的所有实例进行了全局“查找”？是的，我的旧包名称是com.github.ppartisan.simplealarms。我替换了所有文件，但Q.你能解释一下如何进行全局查找吗？这个问题与包名更改有关。您在一些xml或其他文件中使用了整个包名和类。使用Ctrl+Shift+F/Cmd+Shift+F查找旧包名的用法，并将其替换为新包名。Thx我将尝试一下