我有一个包含 5 列的 gridview，如何在第 4 列和第 5 列中添加我在可绘制文件夹中的图像？问题是，作为一个字符串数组列表不能让我绘制，因为它是一个整数。
这是我的 XML:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/scrolView"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:orientation="vertical">
<GridView
android:id="@+id/Grid"
android:numColumns="5"
android:stretchMode="columnWidth"
android:layout_width="match_parent"
android:gravity="center"
android:columnWidth="120dp"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:layout_height="2000dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="30dp"></GridView>
</LinearLayout>
这是我调用 carrito.xml 的 java 代码，我制作了 ListView 。该 ListView 填充了一个字符串数组。
public class carrito extends Fragment {
protected Context context;
private int numComandesCarrito;
private String[][] CarritoProductes;
private double Total;
DecimalFormat precision = new DecimalFormat("0.00");
NumberFormat formatter = NumberFormat.getCurrencyInstance();
String output = formatter.format(Total);
public carrito(){
}
public void setContext (Context context){
this.context = context;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
int i, i2;
numComandesCarrito = ((MainActivity) context).getNumComandesCarrito();
// Toast.makeText(context, Integer.toString(numComandesCarrito), Toast.LENGTH_LONG).show();
CarritoProductes = ((MainActivity) context).getCarritoProductes();
Total = 0;
ArrayList<String> lineasPedido = new ArrayList<String>();
ArrayList<Integer> itemsimg = new ArrayList( );
//Afegim la capçalera de la grid
lineasPedido.add("Plat");
lineasPedido.add("Quantitat");
lineasPedido.add("Preu");
for (i= 0; i < numComandesCarrito; i++){
for (i2 = 0; i2<3; i2++){
if (i2 == 2) {
lineasPedido.add(precision.format(Double.parseDouble(CarritoProductes[i2][i])) + " €");
Total = Total + Double.parseDouble(CarritoProductes[i2][i]);
}
else{
lineasPedido.add(CarritoProductes[i2][i]);
}
}
itemsimg.add(R.drawable.botonmenos);
}
lineasPedido.add("");
lineasPedido.add("");
lineasPedido.add("Total: " + (precision.format(Total)) + " €");
View rootView = inflater.inflate(R.layout.carrito, container, false);
GridView grdView = (GridView)rootView.findViewById(R.id.grdComanda);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this.getActivity(), android.R.layout.simple_list_item_1, lineasPedido);
grdView.setAdapter(adapter);
return rootView;
}
最佳答案
您必须使用自定义适配器将图像放入 gridview
Activity .xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<GridView
android:id="@+id/gridView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:horizontalSpacing="5dp"
android:numColumns="2"
android:verticalSpacing="5dp" >
</GridView>
</RelativeLayout>
行.xml
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layoutbg"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="250dp"
android:gravity="center"
android:orientation="horizontal" >
<ImageView
android:id="@+id/img"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="fitXY"
android:src="@drawable/ic_launcher" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:gravity="center"
android:orientation="horizontal" >
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="left"
android:paddingLeft="15dp"
android:text="TextView" />
<TextView
android:id="@+id/num"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="right"
android:paddingRight="15dp"
android:text="TextView" />
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
FriendAdapter.java
public class FriendAdapter extends ArrayAdapter<FriendBean>{
private Context mCtx;
private ArrayList<FriendBean> items = new ArrayList<FriendBean>();
private ViewHolder mHolder;
ImageLoader imgLoader = new ImageLoader(mCtx);
public LayoutInflater inflater;
int loader = R.drawable.loader;
public FriendAdapter(Context context, int textViewResourceId, ArrayList<FriendBean> items) {
super(context, textViewResourceId, items);
this.items = items;
this.mCtx = context;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater) mCtx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v=vi.inflate(R.layout.row, null);
mHolder=new ViewHolder();
mHolder.mImage=(ImageView)v.findViewById(R.id.img);
mHolder.mName=(TextView)v.findViewById(R.id.name);
mHolder.mPh=(TextView)v.findViewById(R.id.num);
mHolder.mlayoutbg=(RelativeLayout)v.findViewById(R.id.layoutbg);
v.setTag(mHolder);
}
else{
mHolder=(ViewHolder)v.getTag();
}
imgLoader.DisplayImage(items.get(position).getImage(), loader, mHolder.mImage);
//mHolder.mImage.setBackgroundResource(items.get(position).getImage());
mHolder.mName.setText(items.get(position).getName());
mHolder.mPh.setText(items.get(position).getPh());
mHolder.mlayoutbg.setBackgroundColor(Color.GREEN);
// if(position%3==1){
// mHolder.mlayoutbg.setBackgroundColor(Color.GRAY);
// }else if(position%3==2){
// mHolder.mlayoutbg.setBackgroundColor(Color.WHITE);
// }else{
// mHolder.mlayoutbg.setBackgroundColor(Color.YELLOW);
// }
return v;
}
public class ViewHolder {
public ImageView mImage;
public TextView mName;
public TextView mPh;
public RelativeLayout mlayoutbg;
}
}
FriendBean.java
package com.example.bean;
public class FriendBean {
private String Image;
private String name;
private String ph;
private String des;
public FriendBean(String Image, String name, String ph, String des) {
this.Image = Image;
this.name = name;
this.ph = ph;
this.des = des;
}
public String getImage() {
return Image;
}
public void setImage(String image) {
Image = image;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPh() {
return ph;
}
public void setPh(String ph) {
this.ph = ph;
}
public String getDes() {
return des;
}
public void setDes(String des) {
this.des = des;
}
}
MainActivity.java
public class MainActivity extends Activity {
private GridView mList;
private ArrayList<FriendBean> arr = new ArrayList<FriendBean>();
private FriendAdapter friendAdapter;
String friend_name, friend_phone, url, des;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mList = (GridView) findViewById(R.id.gridView1);
StringBuffer sb = new StringBuffer();
BufferedReader br = null;
try {
br = new BufferedReader(new InputStreamReader(getAssets().open(
"gridarray.json")));
String temp;
while ((temp = br.readLine()) != null)
sb.append(temp);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} finally {
try {
br.close(); // stop reading
} catch (IOException e) {
e.printStackTrace();
}
}
String myjsonstring = sb.toString();
try {
JSONObject obj = new JSONObject(myjsonstring);
JSONArray jsonarray = obj.getJSONArray("json");
Log.e("Length", "" + jsonarray.length());
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject jsonObj = jsonarray.getJSONObject(i);
friend_name = jsonObj.getString("friend_name");
friend_phone = jsonObj.getString("friend_phone");
url = jsonObj.getString("image_url");
des = jsonObj.getString("des");
FriendBean bean = new FriendBean(url, friend_name, friend_phone,
des);
arr.add(bean);
Log.e("u", url);
Log.e("friend_name", friend_name);
Log.e("friend_phone", friend_phone);
}
friendAdapter = new FriendAdapter(MainActivity.this, R.layout.row, arr);
mList.setAdapter(friendAdapter);
mList.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), "Clicked on " + arg2,
Toast.LENGTH_SHORT).show();
Intent i = new Intent(getApplicationContext(), NewPage.class);
i.putExtra("friend_name", arr.get(arg2).getName());
i.putExtra("friend_phone", arr.get(arg2).getPh());
i.putExtra("url", arr.get(arg2).getImage());
i.putExtra("des", arr.get(arg2).getDes());
startActivity(i);
}
});
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
gridarray.json(放入资源文件夹中)
{ "json" : [ { "image_url" : "http://www.ogmaconceptions.com/demo/NewsFeed/app_images/twitter_main.png",
"friend_name" : "Madhumoy",
"friend_phone" : "123",
"des" : "Hi I'm Madhumoy"
},
{ "image_url" : "http://www.ogmaconceptions.com/demo/NewsFeed/app_images/twitter_main.png",
"friend_name" : "Sattik",
"friend_phone" : "123",
"des" : "Hi I'm Sattik"
},
{ "image_url" : "http://www.ogmaconceptions.com/demo/NewsFeed/app_images/twitter_main.png",
"friend_name" : "Koushik",
"friend_phone" : "123",
"des" : "Hi I'm Koushik"
},
{ "image_url" : "http://www.ogmaconceptions.com/demo/NewsFeed/app_images/twitter_main.png",
"friend_name" : "Himanshu",
"friend_phone" : "123",
"des" : "Hi I'm Himanshu"
},
{ "image_url" : "http://www.ogmaconceptions.com/demo/NewsFeed/app_images/twitter_main.png",
"friend_name" : "Sandy",
"friend_phone" : "123",
"des" : "Hi I'm Sandy"
}
] }
希望这会起作用..
关于java - 如何将可绘制图像放入 gridview 中？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29235322/