小编Exi*_*ile的帖子

我正在尝试进入android开发,我正在阅读这些教程,但是我真的陷入了HelloGridView教程并且我被苹果开发人员所包围,所以没有任何有任何Android经验的人可以问!

我试图做HelloGridView教程,我得到17个错误,但是看不出我哪里错了？!？我有一种感觉,我错过了图书馆或其他什么？!？

由于我有很多错误,我无法解决,我拍了一张截图:http: //users.cscs.wmin.ac.uk/~w1128683/help/Untitled.jpeg

问题出在HelloGridView和ImageAdapter类中:

HelloGridView类:

    package com.example.HelloGridView;

    import android.app.Activity;
    import android.os.Bundle;

    public class HelloGridView extends Activity {
        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);

            GridView gridview = (GridView) findViewById(R.id.gridview);
            gridview.setAdapter(new ImageAdapter(this));

            gridview.setOnItemClickListener(new OnItemClickListener() {
                public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
                    Toast.makeText(HelloGridView.this, "" + position, Toast.LENGTH_SHORT).show();
                }
            });
        }

ImageAdapter类:

    package com.example.HelloGridView;

    public class ImageAdapter extends BaseAdapter {
        private Context mContext; …