難以從SD卡中獲取圖像並在圖庫中顯示

我似乎遇到了從sdcard將圖像加載到我的圖庫中的問題。我知道我在代碼上做錯了什麼，但不知道是什麼。誰能幫幫我嗎。難以從SD卡中獲取圖像並在圖庫中顯示

這裏是我的GalleryActivity.java：（？這是從SD卡獲取圖像正確的代碼）

import android.app.Activity; 
import android.content.Context; 
import android.database.Cursor; 
import android.net.Uri; 
import android.os.Bundle; 
import android.provider.MediaStore; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.content.res.TypedArray; 
import android.widget.BaseAdapter; 
import android.widget.Gallery; 
import android.widget.ImageView; 
import android.widget.Toast; 

public class GalleryActivity extends Activity { 

Cursor cursor; 

String[] imageIDs = {MediaStore.Images.Thumbnails._ID}; 
GalleryActivity(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, imageIDs, null, null, MediaStore.Images.Thumbnails.IMAGE_ID); 
cursor = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID); 
{ 
}; 
} 


@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
     setContentView(R.layout.gallery); 
     Gallery gallery = (Gallery) findViewById(R.id.gallery1); 
     gallery.setAdapter(new ImageAdapter(this)); 
     gallery.setOnItemClickListener(new OnItemClickListener() 
    { 

     public void onItemClick(AdapterView parent, View v, 
      int position, long id) 
     { 
      Toast.makeText(getBaseContext(),"pic" + (position + 1) + "selected", Toast.LENGTH_SHORT).show(); 
      } 
    }); 
} 

public class ImageAdapter extends BaseAdapter 
{ 
    Context context; 
    int itemBackground; 
    public ImageAdapter(Context c) 
{ 
     context = c; 

     TypedArray a = obtainStyledAttributes(R.styleable.Gallery1); 
     itemBackground = a.getResourceId (R.styleable.Gallery1_android_galleryItemBackground,0); 
     a.recycle(); 
} 

    public int getCount() { 
     return imageIDs.length; 
} 

    public Object getItem(int position) { 
     return position; 
} 

    public long getItemId(int position) { 
     return position; 
} 

    public View getView(int position, View convertView, ViewGroup parent) { 
      ImageView imageView; 
       if (convertView == null) { 
        imageView = new ImageView(context); 
        imageView.setImageURI(Uri.withAppendedPath(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, "" + imageIDs)); 

        imageView.setScaleType(ImageView.ScaleType.FIT_XY); 
          imageView.setLayoutParams(new Gallery.LayoutParams(150, 120)); 
       } else { 
        imageView = (ImageView) convertView; 
       } 
       imageView.setBackgroundResource(itemBackground); 
       return imageView; 
    } 
} 
}

的錯誤是該位的代碼是從cdcard檢索圖像下

String[] imageIDs = {MediaStore.Images.Thumbnails._ID}; 
GalleryActivity(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, imageIDs, null, null, MediaStore.Images.Thumbnails.IMAGE_ID); 
cursor = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);

希望任何人都可以幫助我嗎？

來源

2012-11-16 Allrounder

什麼_is_錯誤？ – Ridcully

即將發生的錯誤在「null，null」和「Thumbnails.IMAGE_ID」中的點下面;「並獲得下錯誤「IMAGE_ID-無差錯）的錯誤是：在此行 \t多個標誌 - 令牌語法錯誤」，「刪除此令牌 \t - 上標記語法錯誤，FormalParameter預計 \t代替 \t - 令牌語法錯誤「）」，{這筆 \t令牌 \t後預期 - 「‘令牌語法錯誤，...預計 \t - 令牌’，」（預計 – Allrounder

哦，簡單的語法錯誤java編譯器錯誤？！請參閱下面的答案。 – Ridcully

這些代碼行已進入方法。你有他們寫在任何方法之外。

GalleryActivity(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, imageIDs, null, null, MediaStore.Images.Thumbnails.IMAGE_ID); 
cursor = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);

來源

2012-11-17 15:50:33 Ridcully

難以從SD卡中獲取圖像並在圖庫中顯示

回答

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