Question

我试图将一个整数数组传递给baseadapter，这样A.class会将一个整数数组传递给B.class中的BaseAdapter。以下是我在A.Class（发送者）中传递整数数组的方法：

int [] mThumb = {
                     R.drawable.image1_thumb, R.drawable.image2_thumb, R.drawable.image3_thumb,
                     R.drawable.image4_thumb, R.drawable.image5_thumb, R.drawable.image6_thumb,
                     R.drawable.image7_thumb, R.drawable.image8_thumb, R.drawable.image9_thumb,
                     R.drawable.image10_thumb};


        Bundle b=new Bundle();
        b.putIntArray("mThumbSent", mThumb);
        Intent startSwitcher = new Intent(A.this, B.class);
        startSwitcher.putExtras(b);

在我的BaseAdapter活动B中：

public class ImageSwitch1 extends Activity Extends ...{
onCreate....
[redacted]
}

private ImageSwitcher mSwitcher;


public class ImageAdapter extends BaseAdapter {

   Bundle b=this.getIntent().getExtras();
    int[] mThumb = b.getIntArray("mThumbSent");

     public ImageAdapter(Context c) {

        mContext = c;
    }

    public int getCount() {

    return mThumb.length; //this used to say return mThumbIds

    }

    public Object getItem(int position) {
        return position;
    }

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

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

        ImageView im = new ImageView(mContext);
        im.setImageResource(mThumb[position]);
        im.setAdjustViewBounds(true);
        im.setLayoutParams(new Gallery.LayoutParams(
        LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
        im.setBackgroundResource(R.drawable.picture_frame);


        return im;
    }

    private Context mContext;

}
}

现在显然上面的代码不正确，我不能在imageadapter中使用getintent。但这是我想要完成的一个说明性示例，并且如果可能的话，想知道如何通过意图将变量或数组传递给BaseAdapter。

Answer 1

getIntent（）将在您的B类中提供。

您可以将Bundle或整数数组放入ImageAdapter

的构造函数中

public class ImageAdapter extends BaseAdapter {

    public ImageAdapter(Context c, Bundle b) {
        int[] mThumb = b.getIntArray("mThumbSent");
        mContext = c;
    }

    .....
}

在Activity B中以这种方式构建适配器：

ImageAdapter adapter = new ImageAdapter(yourcontext,getIntent().getExtras());

您想在哪里使用适配器？在ListView？然后将ListAdapter子类化为BaseAdapter就足够了。

Answer 2

更新ImageAdapter的构造函数以接受如下所示的整数数组：

int[] mResources;

public ImageAdapter(Context c, int[] resources) {
    mResources = resources;
    mContext = c;
}

然后在Activity中初始化Adapter时，只需传递额外的int数组：

ImageAdapter adapter = new ImageAdapter(context, intArray);

将Integer传递给BaseAdapter

2 个答案: