相關(guān)代碼

package com.weyes.focus;

import android.app.Application;

public class MyApplication extends Application {}

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

    <application
        android:name="com.weyes.focus.MyApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

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

問(wèn)題描述

添加：android:name="com.weyes.focus.MyApplication"
項(xiàng)目在安卓5.0以上運(yùn)行都沒(méi)有問(wèn)題。
在4.x上運(yùn)行報(bào)錯(cuò)。我這里三臺(tái)手機(jī)都報(bào)錯(cuò)，紅米（4.2.1）、三星（4.3）、酷派（4.4.4）。
刪除：android:name="com.weyes.focus.MyApplication"
所有手機(jī)運(yùn)行正常。

報(bào)錯(cuò)信息

01-06 15:28:08.720 25650-25650/? E/AndroidRuntime: FATAL EXCEPTION: main
                                                   java.lang.RuntimeException: Unable to get provider com.luck.picture.lib.PictureFileProvider: java.lang.ClassNotFoundException: Didn't find class "com.luck.picture.lib.PictureFileProvider" on path: DexPathList[dexElements=[zip file "/data/app/com.weyes.focus-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.weyes.focus-1, /vendor/lib, /system/lib]]
                                                       at android.app.ActivityThread.installProvider(ActivityThread.java:5115)
                                                       at android.app.ActivityThread.installContentProviders(ActivityThread.java:4670)
                                                       at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4606)
                                                       at android.app.ActivityThread.access$1300(ActivityThread.java:162)
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1414)
                                                       at android.os.Handler.dispatchMessage(Handler.java:99)
                                                       at android.os.Looper.loop(Looper.java:153)
                                                       at android.app.ActivityThread.main(ActivityThread.java:5383)
                                                       at java.lang.reflect.Method.invokeNative(Native Method)
                                                       at java.lang.reflect.Method.invoke(Method.java:511)
                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:853)
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
                                                       at dalvik.system.NativeStart.main(Native Method)
                                                    Caused by: java.lang.ClassNotFoundException: Didn't find class "com.luck.picture.lib.PictureFileProvider" on path: DexPathList[dexElements=[zip file "/data/app/com.weyes.focus-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.weyes.focus-1, /vendor/lib, /system/lib]]
                                                       at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
                                                       at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
                                                       at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
                                                       at android.app.ActivityThread.installProvider(ActivityThread.java:5100)
                                                       at android.app.ActivityThread.installContentProviders(ActivityThread.java:4670)?
                                                       at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4606)?
                                                       at android.app.ActivityThread.access$1300(ActivityThread.java:162)?
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1414)?
                                                       at android.os.Handler.dispatchMessage(Handler.java:99)?
                                                       at android.os.Looper.loop(Looper.java:153)?
                                                       at android.app.ActivityThread.main(ActivityThread.java:5383)?
                                                       at java.lang.reflect.Method.invokeNative(Native Method)?
                                                       at java.lang.reflect.Method.invoke(Method.java:511)?
                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:853)?
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)?
                                                       at dalvik.system.NativeStart.main(Native Method)?

這里報(bào)錯(cuò)說(shuō)找不到這個(gè)類com.luck.picture.lib.PictureFileProvider，其實(shí)不單單是這個(gè)類，而是所有類都找不到，但這些類確實(shí)都是存在的，也就是類加載的時(shí)候就有問(wèn)題了，實(shí)在不知道哪里出了問(wèn)題，哪路大神碰過(guò)類似的問(wèn)題么？求指教！