更新GridView的java问题
我正在尝试开发一款应用程序游戏，它包含12张显示卡，当你选择3张时，这些卡就会被替换。我为此构建了两个类，“positions”和“cards”onCreate()我制作了72张卡片，并将它们添加到一个ArrayList上，并创建了12个位置，这12个位置有一个int作为输入，表示是否选中，以及一张卡片。这张卡的一个输入是R.drawable.image1，在我的ImageAdapter中，我把mThumbIds作为我的MainActivity.p1.getCard().getImage()p1是position的静态实例，所有卡也是静态的。单击某个位置时，该位置会被选中，选择其中3个位置时，我有：
if (deck.size() > 0) {
countSel.get(0).setCard(deck.remove(0));
countSel.get(1).setCard(deck.remove(1));
countSel.get(2).setCard(deck.remove(2));
gridview.invalidateViews();
}
其中，卡片组包含所有卡片，并且countSel仅包含3张选定的卡片。所以基本上，现在我的mThumbIds中的位置有了新的卡片，因此有了新的图片，但是即使卡片更新了，图像也不会更新
感谢您的帮助，以下是我的代码：
图像适配器：
package com.example.set;
import 安卓.content.Context;
import 安卓.view.View;
import 安卓.view.ViewGroup;
import 安卓.widget.BaseAdapter;
import 安卓.widget.GridView;
import 安卓.widget.ImageView;
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 Integer[] getmThumbIds() {
return mThumbIds;
}
public void setmThumbIds(Integer[] mThumbIds) {
this.mThumbIds = mThumbIds;
}
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(200, 200));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
notifyDataSetChanged();
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
notifyDataSetChanged();
return imageView;
}
// references to our images
public Integer[] mThumbIds = {
MainActivity.p1.getCard().getImage() , MainActivity.p2.getCard().getImage(),
MainActivity.p3.getCard().getImage(),MainActivity.p4.getCard().getImage() ,
MainActivity.p5.getCard().getImage(), MainActivity.p6.getCard().getImage(),
MainActivity.p7.getCard().getImage() , MainActivity.p8.getCard().getImage(),
MainActivity.p9.getCard().getImage(), MainActivity.p10.getCard().getImage() ,
MainActivity.p11.getCard().getImage(), MainActivity.p12.getCard().getImage(),
MainActivity.p13.getCard().getImage() , MainActivity.p14.getCard().getImage(),
MainActivity.p15.getCard().getImage()
};
}
主要活动。xml:
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
安卓:id="@+id/gridview"
安卓:layout_width="fill_parent"
安卓:layout_height="fill_parent"
安卓:columnWidth="200dp"
安卓:numColumns="3"
安卓:verticalSpacing="60dp"
安卓:horizontalSpacing="20dp"
安卓:stretchMode="columnWidth"
安卓:gravity="center"
/>
这是我尝试刷新gridview的部分，如果有人认为有错误，我会发布代码的其余部分，我只是很难正确格式化它：
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
if (position == 0) {
choose(p1);
} else if (position == 1) {
choose(p2);
} else if (position == 2) {
choose(p3);
} else if (position == 3) {
choose(p4);
} else if (position == 4) {
choose(p5);
} else if (position == 5) {
choose(p6);
} else if (position == 6) {
choose(p7);
} else if (position == 7) {
choose(p8);
} else if (position == 8) {
choose(p9);
} else if (position == 9) {
choose(p10);
} else if (position == 10) {
choose(p11);
} else if (position == 11) {
choose(p12);
} else if (position == 12) {
choose(p13);
} else if (position == 13) {
choose(p14);
} else if (position == 14) {
choose(p15);
} else {
}
if (countSel.size() == 3) {
countSel.get(0).setChosen(0);
countSel.get(1).setChosen(0);
countSel.get(2).setChosen(0);
if (set(countSel.get(1), countSel.get(2), countSel.get(0))) {
{
Toast.makeText(MainActivity.this, "Got a Set",
Toast.LENGTH_LONG).show();
}
if (deck.size() > 0) {
countSel.get(0).setCard(deck.remove(0));
countSel.get(1).setCard(deck.remove(1));
countSel.get(2).setCard(deck.remove(2));
} else {
countSel.get(0).setCard(cardnull);
countSel.get(1).setCard(cardnull);
countSel.get(2).setCard(cardnull);
}
} else {
Toast.makeText(MainActivity.this,
"Not A Set" + "remaining" + countSel.size(),
Toast.LENGTH_LONG).show();
}
countSel.clear();
}
{
Toast.makeText(MainActivity.this,
"chicken" + "remaining" +countSel.size(),
Toast.LENGTH_SHORT).show();
}
}
});
gridview.invalidateViews();
}
public void choose(Position p) {
if (p.getChosen() == 0) {
p.setChosen(1);
countSel.add(p);
}
else if (p.getChosen() == 1) {
p.setChosen(0);
countSel.remove(p);
System.out.println(countSel.size());
} else
System.out.println("emo");
}
共 (0) 个答案