如何采取从图库部件，并显示在另一活动所选择的图像？ [英] How to take a selected image from gallery widget and show in another activity?

问题描述

我想从画廊的W​​idget加载所选图像并将其加载到另一个活动，我才会真正AP preciate帮助！

I am trying to load a selected image from Gallery Widget and load it in another activity, I will really appreciate help!

基本上它是关于采取我在库中选择，并在 OnItemClick 的意图的图像或我不`吨知道要查看图像中的其它活动。

Basically it is about take the image that I select in the Gallery and make in the OnItemClick an Intent or I don`t know to view the image in another Activity.

类是这样的：

public class Motos extends Activity implements OnClickListener, OnItemSelectedListener, OnItemClickListener{

    Gallery g;

Integer[] images = {
        R.drawable.image1,
        R.drawable.image2,
        R.drawable.image3,
        R.drawable.image4 };


@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.moto);


    g = (Gallery) findViewById(R.id.gallery1);
    g.setOnItemClickListener(this);
    g.setSpacing(2);


}

public class ImageAdapter extends BaseAdapter {

    public ImageAdapter(Context c) {
        mContext = c;
    }

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

    public Object getItem(int position) {
        return images[position];
    }

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

    public View getView(int position, View convertView, ViewGroup parent) {

        ImageView i = new ImageView(mContext);

        i.setImageResource(images[position]);
        i.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
        //i.setLayoutParams(new Gallery.LayoutParams(136, 88));
        return i;
    }

    private Context mContext;

}


@Override
public void onItemClick(AdapterView parent, View v, int position, long id) {
    // TODO Auto-generated method stub

}

}

推荐答案

嗯，貌似你可以通过执行获得所选图像的资源ID如下：

Well, looks like you can get the resource ID of the selected image by doing the following:

@Override
public void onItemClick(AdapterView parent, View v, int position, long id) {
    int selectedId = images[position];  
}

您可以通过所选择的资源ID另一个活动是这样的：

You could pass that selected resource id to another Activity like this:

Intent intent = new Intent(Vehiculos.this, OtherActivity.class);
intent.putExtra("imageId", selectedId);
startActivity(intent);

，然后检索的ID在你的其他活动是这样的：

Intent intent = getIntent();
int imageId = intent.getIntExtra("imageId", -1); // -1 would be a default value

这是一个粗略的例子 - 你可能需要添加一些错误检查

This is a rough example - you will probably need to add some error-checking.

这篇关于如何采取从图库部件，并显示在另一活动所选择的图像？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！