如何解决我的应用程序中的图像适配器错误

Question

hi我正试图将arraylist值获取到我的图像适配器类中，但现在出现了错误。我想解决，但我不知道。

错误行：

Bitmap bitmap = BitmapFactory.decodeFile(path_List.get(position));

错误：Bundle类型中的get（String）方法不适用于参数（int）

我的代码：parxmlActivity.java类

public class ParxmlActivity extends Activity {
    private String array_spinner[];
    private Cursor cursor;
    private int columnIndex;
    ParsedExampleDataSet parsedExampleDataSet= null;
    ArrayList<String> hltag_List=new ArrayList<String>();
    ArrayList<Subchild>sltag_List=new ArrayList<Subchild>();
    ArrayList<String> name_List =new ArrayList<String>();
    ArrayList<String> path_List =new ArrayList<String>();
    ArrayList<String> mmimage_List = new ArrayList<String>();
    ArrayList<String> mname_List = new ArrayList<String>();
    ArrayList<String> mmimage = new ArrayList<String>();
    ArrayList<String> mvideo_List = new ArrayList<String>();
    ArrayList<schild> model_List =new ArrayList<schild>();
    ArrayList<String> mspec_List = new ArrayList<String>();
    Spinner spinner_hltag,spinner_sltag, spinner_path;
    ArrayAdapter<String> adapter_hltag;
    ArrayAdapter<String> adapter_sltag;
    ArrayAdapter<String> adapter_path;
    int hltagPos=0;
    int sltagPos=0;

    Object sdcard;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        GridView sdcardImages = (GridView) findViewById(R.id.sdcard);
        spinner_hltag= (Spinner) findViewById(R.id.spinner1);
        spinner_sltag = (Spinner) findViewById(R.id.spinner2);
        sdcardImages.setOnItemClickListener(new OnItemClickListener() {

            public void onItemClick(AdapterView parent, View v, int position, long id) {
                Intent intent = new Intent(ParxmlActivity.this, tabview.class);
                //intent.putStringArrayListExtra("numbers", mspec_List);
                intent.putExtra("name",model_List.get(position).name);
                //intent.putExtra("name",model_List.get(position).name);

                startActivity(intent);  
            }
        });
        sdcardImages.setAdapter(new ImageAdapter(this));
        String[] proj = {MediaStore.Images.Thumbnails._ID};
        cursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                proj, null, null, null);

        columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Thumbnails._ID);

        try {
            /* Get a SAXParser from the SAXPArserFactory. */
            SAXParserFactory spf = SAXParserFactory.newInstance();
            SAXParser sp = spf.newSAXParser();
            /* Get the XMLReader of the SAXParser we created. */
            XMLReader xr = sp.getXMLReader();
            /* Create a new ContentHandler and apply it to the XML-Reader */
            ExampleHandler myExampleHandler = new ExampleHandler();
            xr.setContentHandler(myExampleHandler);
            /* Parse the xml-data from our file. */
            xr.parse(new InputSource(getAssets().open("mafile.xml")));
            /* Parsing has finished. */
            parsedExampleDataSet =myExampleHandler. myParsedExampleDataSet;
            for (int i = 0; i < parsedExampleDataSet.gethltag().size(); i++) {
                Log.v("gethltag SIZE ", ""+parsedExampleDataSet.gethltag().size());
                hltag_List.add(parsedExampleDataSet.getHLTag().get(i));
            }
            sltag_List = parsedExampleDataSet.getSLTag(hltag_List.get(hltagPos));
            for(int i = 0; i < sltag_List.size(); i++) {
                name_List.add(sltag_List.get(i).name);
                path_List.add(sltag_List.get(i).path);
            }
            model_List.clear();     
            model_List = sltag_List.get(sltagPos).model;
            for(int j = 0; j<model_List.size(); j++){
                mmimage_List.addAll(model_List.get(j).imageList);
                mname_List.add(model_List.get(j).name);
                mvideo_List.addAll(model_List.get(j).videoList);
                mmimage.add(model_List.get(j).mimage);
                mspec_List.add(model_List.get(j).spec);
            }


            spinner_hltag.setAdapter(new MyAdapter(ParxmlActivity.this, R.layout.row, hltag_List)); 
            spinner_sltag.setAdapter(new MyAdapter1(ParxmlActivity.this, R.layout.row1,name_List)); 

        } catch (Exception e) { 
        }

    }

    }

这是我的ImageAdapter.class，我在下面的代码中出错：

public class ImageAdapter extends BaseAdapter {
    Bundle path_List;
    private Context mContext;
    public ImageAdapter(Context c) {
        mContext = c;
    }
    public int getCount() {
        return path_List.size();
    }
    public Object getItem(int position) {
        return null;
    }
    public long getItemId(int position) {
        return 0;
    }
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {  // if it's not recycled, initialize some attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(8, 8, 8, 8);
        } else {
            imageView = (ImageView) convertView;
        }
        //Bitmap bitmap = BitmapFactory.decodeFile(path_List);
        Bitmap bitmap = BitmapFactory.decodeFile(path_List.get(position));
        imageView.setImageBitmap(bitmap);
        return imageView;
    }

}

Answer 1

您正试图从Bundle path_List而不是ArrayList<String> path_List获取字符串值，这就是出现此错误的原因。。

从public class ImageAdapter extends BaseAdapter 中删除此行Bundle path_List;

参考ArrayList<String> path_List而不是Bundle path_List

然后尝试再次跑步。。

更新：此外，我假设您的ImageAdapter类位于ParxmlActivity中。。

代码：如果可能的话，还可以在ImageAdapter类中进行更改。。类似

    public class ImageAdapter extends BaseAdapter
{
    ArrayList<String> path_List =new ArrayList<String>();
    Activity activity;
public ImageAdapter(Activity activity,ArrayList<String> path_List)
    {
        this.activity = activity;
        this.path_List = path_List;
    }
 ....

在你的活动中，这条线应该是，

 sdcardImages.setAdapter(new ImageAdapter(this,path_List));

Answer 2

public Object get (String key)不会将int作为参数。

所以CCD_ 8）乘以CCD_。

我想添加的另一件事是bundle在这里为null，所以首先在里面插入路径。可能是您忘记了将它从活动传递到适配器。

更新：位图位图=BitmapFactory.decodeFile（（String）path_List.getString.valueOf（position））；