ImgGetter方法不顯示來自說明xml的Html圖像標籤

我試圖爲我工作的項目創建一個RSS提要閱讀器。我得到它正確地解析一切到一個textview唯一的問題是，它不會顯示從解析XML文件中獲得的html描述的圖像。我得到一堆藍色塊而不是圖像。所以我嘗試使用ImgGetter方法，該方法可以將HTML標籤轉換爲android中textview的正常web文本，但我遵循一些指南，它仍然只顯示藍色塊而不是圖像。ImgGetter方法不顯示來自說明xml的Html圖像標籤

這裏是我的代碼：

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

import org.apache.http.HttpResponse; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.impl.client.DefaultHttpClient; 

import project.gate6.rssreader.R; 
import android.app.Activity; 
import android.graphics.drawable.Drawable; 
import android.os.Bundle; 
import android.os.Environment; 
import android.text.Html; 
import android.text.Html.ImageGetter; 
import android.text.method.ScrollingMovementMethod; 
import android.widget.TextView; 

public class ShowDetails extends Activity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.details); 




     TextView detailsTitle = (TextView)findViewById(R.id.detailstitle); 
     TextView detailsDescription = (TextView)findViewById(R.id.detailsdescription); 
     TextView detailsPubdate = (TextView)findViewById(R.id.detailspubdate); 
     TextView detailsLink = (TextView)findViewById(R.id.detailslink); 


     Bundle bundle = this.getIntent().getExtras(); 



     detailsTitle.setText(bundle.getString("keyTitle")); 
     detailsDescription.setText(Html.fromHtml(bundle.getString("keyDescription"),imgGetter,null)); 
     detailsDescription.setMovementMethod(new ScrollingMovementMethod()); 
     detailsPubdate.setText(bundle.getString("keyPubdate")); 
     detailsLink.setText(bundle.getString("keyLink")); 

    } 

    static ImageGetter imgGetter = new Html.ImageGetter() { 
     @Override 
     public Drawable getDrawable(String source) { 
      HttpGet get = new HttpGet(source); 
      DefaultHttpClient client = new DefaultHttpClient(); 
      Drawable drawable = null; 
      try{ 
       HttpResponse response = client.execute(get); 
       InputStream stream = response.getEntity().getContent(); 
       FileOutputStream fileout = new FileOutputStream(new File(Environment.getExternalStorageDirectory().getAbsolutePath())); 
       int read = stream.read(); 
       while(read != -1) 
       { 
        fileout.write(read); 
        read = stream.read(); 
       } 
       fileout.flush(); 
       fileout.close(); 
       drawable = Drawable.createFromPath(Environment.getExternalStorageDirectory().getAbsolutePath()); 
       drawable.setBounds(0,0,drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); 

      } 
      catch(ClientProtocolException e) 
      { 
       e.printStackTrace(); 
      } 
      catch(IOException e) 
      { 
       e.printStackTrace(); 
      } 
      return drawable; 
     } 
    }; 

}

我想通了，網頁視圖效果更好這裏是我做編輯我的代碼：

import project.gate6.rssreader.R; 
import android.app.Activity; 
import android.os.Bundle; 

import android.webkit.WebView; 
import android.widget.TextView; 

public class ShowDetails extends Activity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.details); 

     final String mimetype = "text/html"; 
     final String encoding = "UTF-8"; 


     TextView detailsTitle = (TextView)findViewById(R.id.detailstitle); 
     WebView detailsDescription = (WebView)findViewById(R.id.detailsdescription); 
     TextView detailsPubdate = (TextView)findViewById(R.id.detailspubdate); 
     TextView detailsLink = (TextView)findViewById(R.id.detailslink); 


     Bundle bundle = this.getIntent().getExtras(); 



     detailsTitle.setText(bundle.getString("keyTitle")); 
     detailsDescription.loadDataWithBaseURL("",bundle.getString("keyDescription"), mimetype, encoding, ""); 
     detailsPubdate.setText(bundle.getString("keyPubdate")); 
     detailsLink.setText(bundle.getString("keyLink")); 

    } 

}

來源

2011-05-11 Novazero

您正試圖獲取在TextView中顯示的圖像？這是不可能的...（好吧，至少不是簡單的，它並不意味着要做...） – WarrenFaith 2011-05-11 21:18:15

是的，我認爲這將是可能的，因爲根據文檔的方法Html.fromHtml說它應該是能夠讀取顯示在字符串中的圖像。 – Novazero 2011-05-11 21:20:06

嗯也許它會更好地嘗試使用webview閱讀的HTML和顯示頁面？儘管從我看過的表現來看非常糟糕。 – Novazero 2011-05-11 21:24:22

使用網頁視圖代替，這完美地工作。解決方案是在我的第一篇文章。

來源

2011-06-16 18:27:40 Novazero

ImgGetter方法不顯示來自說明xml的Html圖像標籤

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