//主页面主要代码: // 选择图片按钮事件 public void choose(View view) { Intent intent = new Intent(this, NextActivity.class); startActivityForResult(intent, REQUESTCODE); // 跳转下一页的请求码REQUESTCODE=100,用带回数据的跳转,重写onActivityResult()方法 } // 数据返回后将图片显示在imageView protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == REQUESTCODE && resultCode == 101) { // 判断请求码和结果码是否相同,便是否是对应的Intent Bundle bundle = data.getExtras(); int headerid = bundle.getInt("headerId"); // headerId注意这里获取的键要与传过来的键值对应,不然会出错 imageView.setImageResource(headerid); setTitle(getResources().getText(headerid));// 在头部显示资源路径名 } } //第二个Activity的代码 public class NextActivity extends Activity { private GridView gridView; private SimpleAdapter adapter; // 图片数组 private int[] image = { R.drawable.img01, R.drawable.img02, R.drawable.img03, R.drawable.img04, R.drawable.img05, R.drawable.img06, R.drawable.img07, R.drawable.img08, R.drawable.img09 }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.girdview_activity); gridView = (GridView) this.findViewById(R.id.gridview); List<Map<String, Object>> data = new ArrayList<Map<String, Object>>(); for (int i = 0; i < image.length; i++) { Map<String, Object> itemMap = new HashMap<String, Object>(); itemMap.put("header", image[i]); data.add(itemMap); } adapter = new SimpleAdapter(this, data, R.layout.girdview_item, new String[] { "header" }, new int[] { R.id.item_imageview }); gridView.setAdapter(adapter); // 点击选择图片监听 gridView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { int headerId = image[position]; // 获取intent,并返回给主页面数据 Intent intent = getIntent(); Bundle bundle = new Bundle(); bundle.putInt("headerId", headerId); intent.putExtras(bundle); setResult(101, intent); finish();// 关闭该Activity } }); } } //主页面布局: <ImageView android:id="@+id/imageview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="" /> <Button android:id="@+id/choose" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="选择头像" android:onClick="choose" android:layout_below="@+id/imageview" /> //第二个页面布局 <GridView android:id="@+id/gridview" android:layout_width="match_parent" android:layout_height="wrap_content" android:numColumns="3" /> //SimpleAdapter适配器自定义布局 <ImageView android:id="@+id/item_imageview" android:layout_width="match_parent" android:layout_height="wrap_content" />