Question

我在名为n0.html，n1.html等的资产中有html文件。我想创建包含此文件链接的listview，但我不知道该怎么做。我有一个原始文件夹的决定。我该如何将其更改为资产文件？

public class ViewActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        setContentView(R.layout.view);


        Bundle bundle = getIntent().getExtras();

        String itemname = "n" + bundle.getString("defStrID"); //getting string and forming resource name

        Context context = getBaseContext(); //getting context

        //reading text file from resources by name
        String text = readRawTextFile(context, getResources().getIdentifier(itemname, "raw", "ru.falcon5f.carguide;"));

        WebView wWebView = (WebView) findViewById(R.id.webView);
        String summary = "<!Doctype html><html><head><meta charset=utf-8></head><body>" + text + "</body></html>";
        wWebView.loadData(summary, "text/html", "utf-8"); //uploading text to webview
    }

    public static String readRawTextFile(Context ctx, int resId) //reading text raw txt file
    {
         InputStream inputStream = ctx.getResources().openRawResource(resId);

            InputStreamReader inputreader = new InputStreamReader(inputStream);
            BufferedReader buffreader = new BufferedReader(inputreader);
             String line;
             StringBuilder text = new StringBuilder();

             try {
               while (( line = buffreader.readLine()) != null) {
                   text.append(line);
                   text.append('\n');
                 }
           } catch (IOException e) {
               return null;
           }
             return text.toString();
    }
}

加如果我问过于愚蠢的问题并且问得太多，我很抱歉，但我想开始我的第一个申请。这对我来说非常重要。所以它包含两个活动：

ViewActivity 我已根据您的建议更改了

public class ViewActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        setContentView(R.layout.view);


        Bundle bundle = getIntent().getExtras();

        String htmlFileName = "n" + bundle.getString("defStrID"); //getting file name 
        Context context = getBaseContext(); //getting context. You still need that

        //reading text file from resources by name
        try {
            String text = readAssetTextFile(context, htmlFileName);

            WebView wWebView = (WebView) findViewById(R.id.webView);
            String summary = "<!Doctype html><html><head><meta charset=utf-8></head><body>" + text + "</body></html>";
            wWebView.loadData(summary, "text/html", "utf-8"); //uploading text to webview
        } catch (IOException e) {
            Log.e("TAG", e); // note that you will need to import android.util.Log
        }
    }

    public static String readAssetTextFile(Context ctx, String fileName) throws IOException //reading html file from assets
    {
         InputStream inputStream = ctx.getAssets().open(fileName);

     InputStreamReader inputreader = new InputStreamReader(inputStream);
     BufferedReader buffreader = new BufferedReader(inputreader);
      String line;
      StringBuilder text = new StringBuilder();

      try {
        while (( line = buffreader.readLine()) != null) {
            text.append(line);
            text.append('\n');
          }
    } catch (IOException e) {
        return null;
    }
      return text.toString();
}
}

在Log.e("TAG", e); Eclipse中想要将“e”的类型更改为“String”。请帮帮我。如果你能在我的斗争中进一步帮助我，我将非常感激。

Answer 1

它不会有那么大的不同。您现在可以访问资产中的文件： InputStream inputStream = ctx.getAssets().open(fileName);

您可以放置此代替行InputStream inputStream = ctx.getResources().openRawResource(resId);。那么你需要的是传递正确的文件名。使用资产时，您无需使用ID。

编辑编辑您的代码段：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    setContentView(R.layout.view);


    Bundle bundle = getIntent().getExtras();

    String htmlFileName = "n" + bundle.getString("defStrID") + ".html"; //getting file name 
    Context context = getBaseContext(); //getting context. You still need that

    //reading text file from resources by name
    try {
        String text = readAssetTextFile(context, htmlFileName);

        WebView wWebView = (WebView) findViewById(R.id.webView);
        String summary = "<!Doctype html><html><head><meta charset=utf-8></head><body>" + text + "</body></html>";
        wWebView.loadData(summary, "text/html", "utf-8"); //uploading text to webview
    } catch (IOException e) {
        Log.e("TAG", "Exception thrown", e); // note that you will need to import android.util.Log
    }
}

public static String readAssetTextFile(Context ctx, String fileName) //reading html file from assets
{
     InputStream inputStream = ctx.getAssets().open(fileName);
     .....

如何获得包含资产链接的listview？

1 个答案: