我的项目上有一个资产文件,该文件现在包含html代码,我想按波纹管代码上的字符串获取这些代码,所以请帮助我
我如何在波纹管代码上读取String中的资产文件

public class StartPage {

      final String FILENAME = data();

    private static final String HEAD_1 = "<!DOCTYPE html><html xmlns=\"http://www.w3.org/1999/xhtml\">"
            + "<head>"
            + "<meta content=\"en-us\" http-equiv=\"Content-Language\" />"
            + "<meta content=\"text/html; charset=utf-8\" http-equiv=\"Content-Type\" />"
            + "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no\">"
            + "<title>";


    @NonNull
    public static File getStartPageFile(@NonNull Application application) {
        return new File(application.getFilesDir(), FILENAME);
    }

    @NonNull private final String mTitle;

    @Inject Application mApp;
    @Inject SearchEngineProvider mSearchEngineProvider;

    public StartPage() {
        BrowserApp.getAppComponent().inject(this);
        mTitle = mApp.getString(R.string.home);
    }

    @NonNull
    public Single<String> getHomepage() {
        return Single.create(new SingleAction<String>() {
            @Override
            public void onSubscribe(@NonNull SingleSubscriber<String> subscriber) {

                StringBuilder homepageBuilder = new StringBuilder(HEAD_1 + mTitle );

                BaseSearchEngine currentSearchEngine = mSearchEngineProvider.getCurrentSearchEngine();

                String icon = currentSearchEngine.getIconUrl();
                String searchUrl = currentSearchEngine.getQueryUrl();

                homepageBuilder.append(icon);

                homepageBuilder.append(searchUrl);


                File homepage = getStartPageFile(mApp);
                FileWriter hWriter = null;
                try {
                    //noinspection IOResourceOpenedButNotSafelyClosed
                    hWriter = new FileWriter(homepage, false);
                    hWriter.write(homepageBuilder.toString());
                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                    Utils.close(hWriter);
                }

                subscriber.onItem(Constants.FILE + homepage);

            }
        });
     private String data(){
        InputStream inputStream = getAsseet().openRawResource(R.raw.database);
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

        int i;
        try {
            i = inputStream.read();
            while (i != -1)
            {
                byteArrayOutputStream.write(i);
                i = inputStream.read();
            }
            inputStream.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return byteArrayOutputStream.toString();
    }
 }

}


我在这里尝试读取资产文件,但是在这里给出错误(无法解析方法getAsset()),所以请通过编写代码来帮助我
谢谢
奥斯曼

最佳答案

getAssets()是类Context的方法。在活动中,您只能调用getAssets(),因为它被视为this.getAssets(),并且活动是Context的子类。这就是为什么您可以在Activty中调用它的原因。由于您的类不是Context的子类,因此无法在类中调用getAssets()this.getAssets(),因为没有此类方法。

因此,现在您必须获取一些Context才能调用getAssets()。您有一个Application mApp;的实例,它是Context以及Activty的子类。这样您就可以拨打mApp.getAssets()

09-28 06:26