无法使用自定义Cordova Apache插件在本地打开PDF文件

Question

我尝试创建一个Cordova插件，根据一些示例在混合应用程序中打开PDF文件。我在Android模拟器上运行应用程序时遇到此错误。

logcat的：

[2015-10-25 20:43:10 - CordTestProjectCordTestAndroid] Conversion to Dalvik format failed with error 1
[2015-10-25 20:58:56 - CordTestProjectCordTestAndroid] Dx Uncaught translation error: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded
[2015-10-25 20:58:56 - CordTestProjectCordTestAndroid] Dx Uncaught translation error: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded
`enter code here`[2015-10-25 20:58:56 - CordTestProjectCordTestAndroid] Dx Uncaught translation error: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded
[2015-10-25 20:58:56 - CordTestProjectCordTestAndroid] Dx 3 errors; aborting
[2015-10-25 20:58:56 - CordTestProjectCordTestAndroid] Conversion to Dalvik format failed with error 1

以下是代码：

config.xml:

 <feature name="FileOpenerPlugin">
    <param name="android-package" value="FileOpenerPlugin" />
</feature>

main.js：

function openPDF() {

var name = 'helloworld.pdf';
window.resolveLocalFileSystemURL (name);
alert(name);
cordova.exec(null, null, "FileOpenerPlugin", "openFile", [name]);
 }

FileOpenerPlugin.Java：

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.cordova.CallbackContext;
 import org.apache.cordova.CordovaPlugin;
  import org.apache.cordova.PluginResult;
import org.json.JSONArray;
import org.json.JSONException;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;

public class FileOpenerPlugin extends CordovaPlugin {

@Override
public boolean execute(String action, JSONArray args,
                CallbackContext callbackContext) throws JSONException {

            PluginResult.Status status = PluginResult.Status.OK;
        String result = "";

        try {
            if (action.equals("openFile")) {
                openFile(args.getString(0));
            }
            else {
                status = PluginResult.Status.INVALID_ACTION;
            }

            return true;
        } catch (JSONException e) {
            return false;
        } catch (IOException e) {
            return false;
        }
}

private void openFile(String url) throws IOException {
    // Create URI
    Uri uri = Uri.parse(url);

    Intent intent = null;
    // Check what kind of file you are trying to open, by comparing the url with extensions.
    // When the if condition is matched, plugin sets the correct intent (mime) type,
    // so Android knew what application to use to open the file

    if (url.contains(".doc") || url.contains(".docx")) {
        // Word document
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "application/msword");
    } else if(url.contains(".pdf")) {
        // PDF file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "application/pdf");
    } else if(url.contains(".ppt") || url.contains(".pptx")) {
        // Powerpoint file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "application/vnd.ms-powerpoint");
    } else if(url.contains(".xls") || url.contains(".xlsx")) {
        // Excel file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "application/vnd.ms-excel");
    } else if(url.contains(".rtf")) {
        // RTF file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "application/rtf");
    } else if(url.contains(".wav")) {
        // WAV audio file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "audio/x-wav");
    } else if(url.contains(".gif")) {
        // GIF file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "image/gif");
    } else if(url.contains(".jpg") || url.contains(".jpeg")) {
        // JPG file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "image/jpeg");
    } else if(url.contains(".png")) {
        // PNG file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "image/png");
    } else if(url.contains(".txt")) {
        // Text file
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "text/plain");
    } else if(url.contains(".mpg") || url.contains(".mpeg") ||    url.contains(".mpe") || url.contains(".mp4") || url.contains(".avi")) {
        // Video files
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "video/*");
    }

    //if you want you can also define the intent type for any other file

    //additionally use else clause below, to manage other unknown extensions
    //in this case, Android will show all applications installed on the device
    //so you can choose which application to use


    else {            intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(uri, "*/*");
    }

    this.cordova.getActivity().startActivity(intent);
  }
}