Android aFileChooser无法实例化活动

我在Android上使用aFileChoser，由于某种原因，在低于Android 4.4 Kitkat的设备上，当我选择一个文件时，应用程序崩溃。以下是我的活动：

    public class aFileChooser extends Activity {

private static final int REQUEST_CHOOSER = 1234;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.maps);

// Create the ACTION_GET_CONTENT Intent
Intent getContentIntent = FileUtils.createGetContentIntent();

Intent intent = Intent.createChooser(getContentIntent, "Select a file");
startActivityForResult(intent, REQUEST_CHOOSER);
}

 @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
    case REQUEST_CHOOSER:   
        if (resultCode == RESULT_OK) {

            final Uri uri = data.getData();

            // Get the File path from the Uri
            String path = FileUtils.getPath(this, uri);

            // Alternatively, use FileUtils.getFile(Context, Uri)
            if (path != null && FileUtils.isLocal(path)) {
                File file = new File(path);

                String zipFile = path; 
                String unzipLocation = Environment.getExternalStorageDirectory() + 
"/games/com.mojang/minecraftWorlds/";

                Decompress d = new Decompress(zipFile, unzipLocation); 
                d.unzip(); 

                Toast.makeText(aFileChooser.this, "Process completed! This map has been   
added to your game!", Toast.LENGTH_LONG).show();


            }
        }

        this.finish();

 }
}

 }

这是我的日志：

08-05 23:05:53.695: E/AndroidRuntime(757): FATAL EXCEPTION: main 08-05 23:05:53.695: E/AndroidRuntime(757): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.dogger20011.mcpemodlocater/com.ipaulpro.afilechooser.FileChooserActivity}: java.lang.ClassNotFoundException: com.ipaulpro.afilechooser.FileChooserActivity 08-05 23:05:53.695: E/AndroidRuntime(757): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1880) 08-05 23:05:53.695: E/AndroidRuntime(757): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 08-05 23:05:53.695: E/AndroidRuntime(757): at android.app.ActivityThread.access$600(ActivityThread.java:123) 08-05 23:05:53.695: E/AndroidRuntime(757): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 08-05 23:05:53.695: E/AndroidRuntime(757): at android.os.Handler.dispatchMessage(Handler.java:99) 08-05 23:05:53.695: E/AndroidRuntime(757): at android.os.Looper.loop(Looper.java:137) 08-05 23:05:53.695: E/AndroidRuntime(757): at android.app.ActivityThread.main(ActivityThread.java:4424) 08-05 23:05:53.695: E/AndroidRuntime(757): at java.lang.reflect.Method.invokeNative(Native Method) 08-05 23:05:53.695: E/AndroidRuntime(757): at java.lang.reflect.Method.invoke(Method.java:511) 08-05 23:05:53.695: E/AndroidRuntime(757): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 08-05 23:05:53.695: E/AndroidRuntime(757): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 08-05 23:05:53.695: E/AndroidRuntime(757): at dalvik.system.NativeStart.main(Native Method) 08-05 23:05:53.695: E/AndroidRuntime(757): Caused by: java.lang.ClassNotFoundException: com.ipaulpro.afilechooser.FileChooserActivity 08-05 23:05:53.695: E/AndroidRuntime(757): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 08-05 23:05:53.695: E/AndroidRuntime(757): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 08-05 23:05:53.695: E/AndroidRuntime(757): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 08-05 23:05:53.695: E/AndroidRuntime(757): at android.app.Instrumentation.newActivity(Instrumentation.java:1023) 08-05 23:05:53.695: E/AndroidRuntime(757): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871) 08-05 23:05:53.695: E/AndroidRuntime(757): ... 11 more

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你犯了什么错误？请告诉我。别让我们搜查，我想我说错了。当我选择Choose a file on devices lower然后Kitkat时，应用程序崩溃。这就是我贴日志的原因。很抱歉，很好，你发了日志。现在你可以自己看到错误是什么了。请告诉我。我正在使用Android的aFileChoser，这是一个已知的组件还是类？请首先解释。aFileChooser是由iPaulPro创建的库。它在安卓社区有点出名。如果您想查看以下github链接：