c++代码在android平台上除了dlopen("libUE4.so",RTLD_LAZY)取句柄还有什么方法
时间: 2023-06-18 13:08:07 浏览: 207
在 Android 平台上,您可以使用 `ANativeActivity` 类来获取应用程序的上下文并加载共享库。以下是使用 `ANativeActivity` 加载共享库的代码示例:
```c++
#include <android_native_app_glue.h>
#include <dlfcn.h>
// ...
void android_main(struct android_app* state) {
// 获取应用程序上下文
JNIEnv* env = state->activity->env;
jobject activity = state->activity->clazz;
jclass activity_class = env->GetObjectClass(activity);
// 加载共享库
void* handle = dlopen("libUE4.so", RTLD_LAZY);
// ...
}
```
注意,使用 `ANativeActivity` 加载共享库需要您在应用程序的 AndroidManifest.xml 文件中声明 `android.app.NativeActivity`。例如:
```xml
<manifest ... >
<application ... >
<activity android:name="android.app.NativeActivity"
android:label="@string/app_name"
android:configChanges="orientation|keyboardHidden">
<meta-data android:name="android.app.lib_name"
android:value="my-native-activity" />
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
...
</application>
</manifest>
```
请确保将 `android.app.lib_name` 的值设置为您的共享库的名称。
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