带有来自网站和文本视图的图像的 GridView？

Question

在我的android应用程序中/我正在尝试做一些类似的事情 http://i56.tinypic.com/2ivno8l .jpg。我在这里找到了如何使用图像或文本视图制作网格视图的示例： http://www. bogotobogo.com/Android/android6ListViewSpinnerGridViewGalleryB.html#GridView 但我也不知道如何处理图像和文本视图。谁能帮助我吗？

谢谢..

我尝试过：

package com.MyGridView;

import java.io.InputStream;
import java.net.URI;
import java.net.URL;

import android.R.integer;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.TextView;

public class ImageAdapter1 extends BaseAdapter {

    private Context mContext;

    private LayoutInflater inflater = null;

    private Activity activity;

    public ImageAdapter1(Context c) {
        mContext = c;
        inflater = (LayoutInflater) activity
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

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

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

    public long getItemId(int position) {
        return 0;
    }

    public class ViewHolder {
        public TextView text;
        public ImageView image;
    }

    // create a new ImageView for each item referenced by the Adapter
    public View getView(int position, View convertView, ViewGroup parent) {
        View vi = convertView;
        ViewHolder holder;
        if (convertView == null) {
            vi = inflater.inflate(R.layout.item, null);
            holder = new ViewHolder();
            holder.text = (TextView) vi.findViewById(R.id.text);
            holder.image = (ImageView) vi.findViewById(R.id.image);

            holder.image.setLayoutParams(new GridView.LayoutParams(85, 85));
            holder.image.setScaleType(ImageView.ScaleType.CENTER_CROP);
            holder.image.setPadding(8, 8, 8, 8);

        } else
            holder = (ViewHolder) vi.getTag();

        holder.text.setText(WORLDCUP2010[position]);
        holder.image.setImageResource(filesnames[position]);

        return vi;
    }


    private Integer[] filesnames = { R.drawable.icon, R.drawable.icon,
            R.drawable.icon, R.drawable.icon, R.drawable.icon, R.drawable.icon,
            R.drawable.icon, R.drawable.icon, R.drawable.icon, R.drawable.icon,
            R.drawable.icon, R.drawable.icon, R.drawable.icon, R.drawable.icon,
            R.drawable.icon, R.drawable.icon, R.drawable.icon, R.drawable.icon

    };

    static final String[] WORLDCUP2010 = new String[] { "Algeria", "Argentina",
            "Australia", "Brazil", "Cote d'Ivoire", "Cameroon", "Chile",
            "Costa Rica", "Denmark", "England", "France", "Germany", "Ghana",
            "Greece", "Honduras", "Italy", "Japan", "Netherlands",
            "New Zealand", "Nigeria", "North Korea", "Paraguay", "Portugal", };

}

并且我在 Logcat 中得到了这个：

07-21 17:30:43.152: ERROR/AndroidRuntime(396): Uncaught handler: thread main exiting due to uncaught exception
07-21 17:30:43.172: ERROR/AndroidRuntime(396): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.MyGridView/com.MyGridView.MyGridView}: java.lang.NullPointerException
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.app.ActivityThread.access$2200(ActivityThread.java:119)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.os.Handler.dispatchMessage(Handler.java:99)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.os.Looper.loop(Looper.java:123)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.app.ActivityThread.main(ActivityThread.java:4363)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at java.lang.reflect.Method.invokeNative(Native Method)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at java.lang.reflect.Method.invoke(Method.java:521)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at dalvik.system.NativeStart.main(Native Method)
07-21 17:30:43.172: ERROR/AndroidRuntime(396): Caused by: java.lang.NullPointerException
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at com.MyGridView.ImageAdapter1.<init>(ImageAdapter1.java:34)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at com.MyGridView.MyGridView.onCreate(MyGridView.java:23)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
07-21 17:30:43.172: ERROR/AndroidRuntime(396):     ... 11 more

Answer 1

只需谷歌搜索有关自定义适配器（包括文本视图和图像视图）的示例即可。

我在这里找到了一个例子：
http://www. Stealthcopter.com/blog/2010/09/android-creating-a-custom-adapter-for-gridview-buttonadapter/

编辑：

一个很好的例子是efficientAdapter在这里找到： http:// developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List14.html
在该示例中，他们使用布局充气器而不是从上下文创建 ImageView（或按钮）。