將圖像加載到頁面捲曲活動

我已經將一組圖像加載到我的SD卡中，並且想在頁面捲曲活動中顯示它們。將圖像加載到頁面捲曲活動

我檢查，如果圖像正確下載：

ArrayList<String> mStringList= new ArrayList<String>(); 
File strPath = new File(Environment.getExternalStorageDirectory() + "/Pictures"); 
int lists = strPath.listFiles().length; 
Log.d("number of items in array ",String.valueOf(lists)); 

File yourDir = new File(strPath, ""); 
for (File f : yourDir.listFiles()) { 
    if (f.isFile()) 
    { 
     String name = f.getName(); 
     String v = strPath + "/" + name; 
     mStringList.add(v); 
    } 
}

這是位地圖提供商：

* Bitmap provider. 
*/ 
private class PageProvider implements CurlView.PageProvider { 

    // Bitmap resources. 
    private int[] mBitmapIds = { R.drawable.obama, R.drawable.road_rage, 
      R.drawable.taipei_101, R.drawable.world }; 

    @Override 
    public int getPageCount() { 
     return 5; 
    } 

    private Bitmap loadBitmap(int width, int height, int index) { 
     Bitmap b = Bitmap.createBitmap(width, height, 
       Bitmap.Config.ARGB_8888); 
     b.eraseColor(0xFFFFFFFF); 
     Canvas c = new Canvas(b); 
     Drawable d = getResources().getDrawable(mBitmapIds[index]); 

     int margin = 7; 
     int border = 3; 
     Rect r = new Rect(margin, margin, width - margin, height - margin); 

     int imageWidth = r.width() - (border * 2); 
     int imageHeight = imageWidth * d.getIntrinsicHeight() 
       /d.getIntrinsicWidth(); 
     if (imageHeight > r.height() - (border * 2)) { 
      imageHeight = r.height() - (border * 2); 
      imageWidth = imageHeight * d.getIntrinsicWidth() 
        /d.getIntrinsicHeight(); 
     } 

     r.left += ((r.width() - imageWidth)/2) - border; 
     r.right = r.left + imageWidth + border + border; 
     r.top += ((r.height() - imageHeight)/2) - border; 
     r.bottom = r.top + imageHeight + border + border; 

     Paint p = new Paint(); 
     p.setColor(0xFFC0C0C0); 
     c.drawRect(r, p); 
     r.left += border; 
     r.right -= border; 
     r.top += border; 
     r.bottom -= border; 

     d.setBounds(r); 
     d.draw(c); 

     return b; 
    }

如何更換

// Bitmap resources. 
     private int[] mBitmapIds = { R.drawable.obama, R.drawable.road_rage, 
       R.drawable.taipei_101, R.drawable.world }; 
and Drawable d = getResources().getDrawable(mBitmapIds[index]);

到那些在我的SD卡？

來源

2013-01-09 user1234555

http://whathaveyoutried.com？（認真的人，請問之前請嘗試一些） – njzk2

@ njzk2我設法將我的SD卡上的項目添加到String []數組中，但我不知道如何將它顯示到可繪製的d中。這就是我試過 – user1234555

我不明白你的意見。你可能試圖從確定如何枚舉SD卡上的圖像開始？ – njzk2

轉換的圖像從SD卡來繪製如下：

BitmapFactory.Options options = new BitmapFactory.Options(); 
options.inPreferredConfig = Bitmap.Config.ARGB_8888; 
Bitmap bitmap = BitmapFactory.decodeFile(mStringList[index], options); 

Drawable d = new BitmapDrawable(bitmap);;

來源

2013-01-09 08:58:37

它說「不能從位圖轉換爲位圖可抽取」。那個錯誤是什麼意思？ – user1234555

@ user1933630：看到我的編輯答案 –

非常感謝！ :) – user1234555

將圖像加載到頁面捲曲活動

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