Question

我的购物应用程序收藏夹页面需要帮助。它是一个gridview布局，保存图像用于说明目的。我要求这些图像能够针对每个不同的产品页面而不是所有的同一页面。以下是我的示例的一些代码片段。

Favourites.java：

public class Favourites extends Activity implements OnClickListener {

ImageView btnAllShops, btnFavourites, btnUploads, btnSettings, btnBuys;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_favourites);

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

    gvFavourites.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
            Toast.makeText(Favourites.this, "" + position, Toast.LENGTH_SHORT).show();
            switch (position) {
            case 0:
            // start one activity
            break;
            case 1:
            // start another activity
            break;
            // etc.

        }
        }});
}

private void findViewById() {
    btnAllShops = (ImageView) findViewById(R.id.btnAllShops);
    btnFavourites = (ImageView) findViewById(R.id.btnFavourites);
    btnUploads = (ImageView) findViewById(R.id.btnUploads);
    btnSettings = (ImageView) findViewById(R.id.btnSettings);
    btnBuys = (ImageView) findViewById(R.id.btnBuys);

    btnAllShops.setOnClickListener(this);
    btnFavourites.setOnClickListener(this);
    btnUploads.setOnClickListener(this);
    btnSettings.setOnClickListener(this);
    btnBuys.setOnClickListener(this);

}

@Override
public void onClick(View arg0) {
    switch (arg0.getId()) {
    case R.id.btnAllShops:
        Intent iA = new Intent(getApplicationContext(), AllShops.class);
        startActivity(iA);
        break;

    case R.id.btnFavourites:
        Intent iF = new Intent(getApplicationContext(), Favourites.class);
        startActivity(iF);

        break;

    case R.id.btnUploads:
        Intent iU = new Intent(getApplicationContext(), Uploads.class);
        startActivity(iU);

        break;

    case R.id.btnSettings:
        Intent iS = new Intent(getApplicationContext(),
                SettingsActivity.class);
        startActivity(iS);

        break;

    case R.id.btnBuys:
        Intent iBuy = new Intent(getApplicationContext(), Buys.class);
        startActivity(iBuy);

        break;
    }
}

}

ImageAdapter.java：

public class ImageAdapter extends BaseAdapter {

private Context mContext;

public ImageAdapter(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(266, 266));
        imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
        imageView.setPadding(10, 10, 10, 10);
    } else {
        imageView = (ImageView) convertView;
    }

    imageView.setImageResource(mThumbIds[position]);
    return imageView;
}
// references to our images
private Integer[] mThumbIds = {
        R.drawable.sample_2, R.drawable.sample_3,
        R.drawable.sample_4, R.drawable.sample_5,
        R.drawable.sample_6, R.drawable.sample_7,
        R.drawable.sample_0, R.drawable.sample_1,
        R.drawable.sample_2, R.drawable.sample_3,
        R.drawable.sample_4, R.drawable.sample_5,
        R.drawable.sample_6, R.drawable.sample_7,
        R.drawable.sample_0, R.drawable.sample_1,
        R.drawable.sample_2, R.drawable.sample_3,
        R.drawable.sample_4, R.drawable.sample_5,
        R.drawable.sample_6, R.drawable.sample_7
};

}

Answer 1

您需要在imageAdapter的getView方法中添加onClickListener。例如。

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(266, 266));
    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
    imageView.setPadding(10, 10, 10, 10);
} else {
    imageView = (ImageView) convertView;
}

imageView.setImageResource(mThumbIds[position]);
//add your listener here.
imageView.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        switch (position) {
            //put whatever your different positions are
            case 0:
                startActivity(whatever activity name);
                break;
            case 1:
                startActivity(next activity name);
                break;
            //etc...
        startActivity("whatever you need to start");
    }
}

return imageView;

}

Answer 2

您可以做的是在图片视图中添加标签。在此行之后的代码中

 imageView.setImageResource(mThumbIds[position]);

喜欢

imageView.setTag....

然后在onclick（）中你可以得到这个标签，你可以在意图中传递id。

注意：您可以在标记

中设置资源的ID

添加图像意图以链接到另一个页面

2 个答案: