哪位大佬帮忙看下这段增加类加载器哪错了 loadClass一直找不到类

fuck_vk

[Java] 纯文本查看 复制代码

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        addClassLoader(this, "/sdcard/2.dex");
    }

    //动态加载dex 文件
    public void addClassLoader(Context context, String DexFilePath) {
        Log.d("测试", "lado: ============成功加载lado");
        File fIleDex = context.getDir("oopt_dex", 0);
        File fileLib = context.getDir("lib_path", 0);

        Log.d("测试", "lado: ============开始创建类加载器");
        ClassLoader pathClassLoader= MainActivity.this.getClassLoader();
        ClassLoader boootClassLoader= MainActivity.this.getClassLoader().getParent();
        DexClassLoader dexClassLoader = new DexClassLoader(DexFilePath, fIleDex.getAbsolutePath(), fileLib.getAbsolutePath(), boootClassLoader);

        try {
            Field parentField = ClassLoader.class.getDeclaredField("parent");
            parentField.setAccessible(true);
            parentField.set(pathClassLoader,dexClassLoader);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
        
        Class<?> clazz = null;
        try {
            clazz = dexClassLoader.loadClass("com.playgame.demooo.MainActivity");   //这里直接就异常了
            if (clazz != null) {
                context.startActivity(new Intent(context,clazz));
            }

        } catch (ClassNotFoundException  e) {
            e.printStackTrace();
        }
    }
}

XML:
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAG"/>
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>

<uses-permission android:name="android.permission.WRITE_MEDIA_STORAGE" tools:ignore="ProtectedPermissions" />

<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.MyApplication">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
   
    <activity android:name="com.playgame.demooo.MainActivity">
    </activity>
    <activity android:name="com.playgame.demooo.testMainActivity">
    </activity>
</application>


dex：


不知道为什么在clazz = dexClassLoader.loadClass("com.playgame.demooo.MainActivity");
在这条就直接异常了，是不是我哪写错了？

shmilyaxy

好像你有两个Activity都是com.playgame.demooo.开头的，要不就拿一个test....的试一下看看行不。