在Android中的GridView中创建可单击的图像,可以通过以下步骤实现:
以下是一个简单的示例代码:
public class ImageAdapter extends BaseAdapter {
private Context mContext;
private final int[] mThumbIds;
public ImageAdapter(Context c, int[] thumbIds) {
mContext = c;
mThumbIds = thumbIds;
}
@Override
public int getCount() {
return mThumbIds.length;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(150, 150));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
}
public class ImageAdapter extends BaseAdapter {
private Context mContext;
private final int[] mThumbIds;
private final ArrayList<Integer> mThumbs;
public ImageAdapter(Context c, int[] thumbIds) {
mContext = c;
mThumbIds = thumbIds;
mThumbs = new ArrayList<>();
for (int i = 0; i< thumbIds.length; i++) {
mThumbs.add(thumbIds[i]);
}
}
@Override
public int getCount() {
return mThumbs.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(150, 150));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbs.get(position));
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 处理点击事件
}
});
return imageView;
}
}
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:id="@+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop" />
<TextView
android:id="@+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="16sp" />
</LinearLayout>
public class MainActivity extends AppCompatActivity {
private GridView mGridView;
private ImageAdapter mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGridView = (GridView) findViewById(R.id.grid_view);
mAdapter = new ImageAdapter(this, getResources().getIntArray(R.array.image_ids));
mGridView.setAdapter(mAdapter);
mGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// 处理点击事件
}
});
}
}
这样就可以在Android中的GridView中创建可单击的图像了。
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