Question

如何使用图像本身和文本将图像添加到网格视图中。我尝试制作自定义图像适配器，但它不适用于某些原因在imgView.setLayoutParams上遇到崩溃（new GridView.LayoutParams（85,85））;

新问题我如何添加和删除图像适配器...我需要行为像一张照片用一个和我添加相同的图片与文本ab所以应该有2个图片然后我可以删除一个用... ..

import java.util.ArrayList;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

public class AlbumAdapter extends BaseAdapter {

    private Context mContext;
    private ArrayList albNames;

    public AlbumAdapter(Context c, ArrayList albNames) {

        mContext = c;
        this.albNames = albNames;
    }

    public int getCount() {

        return mThumbIds.length;
    }

    public Object getItem(int position) {

        return null;
    }

    public long getItemId(int position) {

        return 0;
    }

    // create a new ImageView for each item referenced by the Adapter
/*  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(10, 10, 10, 3);
        } 

        else {

            imageView = (ImageView) convertView;
        }

        imageView.setImageResource(mThumbIds[position]);
        return imageView;
    }

    */

    public View getView(int position, View convertView, ViewGroup parent) {

        View view;

        if (convertView == null) {

            LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = inflater.inflate(R.layout.album_image, null);
        } 

        else {

            view = convertView;
        }

        ImageView imgView = (ImageView) view.findViewById(R.id.icon_image);
        imgView.setLayoutParams(new LinearLayout.LayoutParams(50, 50));
        imgView.setScaleType(ImageView.ScaleType.CENTER_CROP);
        imgView.setPadding(10, 10, 10, 3);
        TextView albNameView = (TextView) view.findViewById(R.id.icon_text);

        if (albNames.size() > 0) {

            for (int i = 0; i < albNames.size(); i++) {

                imgView.setBackgroundResource(R.drawable.folder);           
                albNameView.setText((String)albNames.get(i));

            }

        }




        return view;
    }


    // references to our images
    public Integer[] mThumbIds = { R.drawable.folder};

}

Answer 1

尝试

imgView.setLayoutParams(new LinearLayout.LayoutParams(85, 85));

修改

import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.GridView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; public class AlbumAdapter extends BaseAdapter { private Context mContext; public AlbumAdapter(Context c) { mContext = c; } public int getCount() { return mThumbIds.length; } public Object getItem(int position) { return null; } public long getItemId(int position) { return 0; } // create a new ImageView for each item referenced by the Adapter /* 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(10, 10, 10, 3); } else { imageView = (ImageView) convertView; } imageView.setImageResource(mThumbIds[position]); return imageView; } */ public View getView(int position, View convertView, ViewGroup parent) { View view; if (convertView == null) { LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); view = inflater.inflate(R.layout.album_image, null); } else { view = convertView; } ImageView imgView = (ImageView) view.findViewById(R.id.icon_image); imgView.setLayoutParams(new LinearLayout.LayoutParams(85, 85)); imgView.setScaleType(ImageView.ScaleType.CENTER_CROP); imgView.setBackgroundResource(R.drawable.a); TextView albNameView = (TextView) view.findViewById(R.id.icon_text); albNameView.setText("as"); return view; } // references to our images public Integer[] mThumbIds = { R.drawable.a }; }

Answer 2

'imgView'是ConvertView的子节点，它从R.layout.album_image中膨胀，它只是一个LinearLayout。因此，在设置布局参数时，它需要是父类ViewGroup类型。所以LinearLayout.LayoutParams工作正常。

假设你想设置'ConvertView'的大小，那么在这种情况下它需要是GridView.LayoutParams，becoz'ConvertView'被添加到父GridView。

希望你明白了!! !!

自定义imageadapter与imageview和文本

2 个答案: