//activty--main
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.example.a1.day8_xlistview.MainActivity"> <ListView android:id="@+id/main_listview" android:layout_width="match_parent" android:layout_height="wrap_content"></ListView> </LinearLayout>
//one--layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent"> <ImageView android:id="@+id/t_image" android:layout_width="60dp" android:layout_height="60dp" android:layout_weight="1" app:srcCompat="@mipmap/ic_launcher" /> <TextView android:id="@+id/t_title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_toEndOf="@+id/t_image" android:layout_toRightOf="@+id/t_image" android:text="标题" android:textSize="30sp" /> </RelativeLayout>
//two--Layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/w_title" android:layout_width="match_parent" android:layout_height="wrap_content" android:singleLine="true" android:text="标题" android:textColor="#000" android:textSize="30sp" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageView android:scaleType="centerCrop" android:id="@+id/imageView1" android:layout_width="0dp" android:layout_height="60dp" android:layout_weight="1" android:src="@mipmap/ic_launcher" /> <ImageView android:scaleType="centerCrop" android:id="@+id/imageView2" android:layout_width="0dp" android:layout_height="60dp" android:layout_weight="1" android:src="@mipmap/ic_launcher" /> <ImageView android:id="@+id/imageView3" android:layout_width="0dp" android:layout_height="60dp" android:layout_weight="1" android:scaleType="centerCrop" android:src="@mipmap/ic_launcher" /> </LinearLayout> </LinearLayout>
//适配器
public class ListAdapter extends BaseAdapter { private Context context; private List<NewsBean.ResultBean.DataBean>list; private static final int TYPE_1=0; private static final int TYPE_2=1; public ListAdapter(Context context, List<NewsBean.ResultBean.DataBean> list) { this.context = context; this.list = list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return null; } @Override public long getItemId(int position) { return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { //获取视图类型 int itemViewType=getItemViewType(position); switch (itemViewType){ case TYPE_1: ViewHolder holder; if (convertView==null){ convertView=View.inflate(context,R.layout.oneitem_layout,null); holder=new ViewHolder(); holder.type_iamge=convertView.findViewById(R.id.t_image); holder.type_title=convertView.findViewById(R.id.t_title); convertView.setTag(holder); }else { holder= (ViewHolder) convertView.getTag(); } holder.getType_title().setText(list.get(position).getTitle()); String thumbnail_pic_s = list.get(position).getThumbnail_pic_s(); //加载图片 ImageLoader.getInstance().displayImage(thumbnail_pic_s,holder.getType_iamge(),MyApp.getOptions()); break; case TYPE_2: ViewHolder2 viewHolder2; if (convertView==null){ convertView=View.inflate(context,R.layout.twoitem_layout,null); viewHolder2=new ViewHolder2(); viewHolder2.two_title=convertView.findViewById(R.id.w_title); viewHolder2.imageView01=convertView.findViewById(R.id.imageView1); viewHolder2.imageView02=convertView.findViewById(R.id.imageView2); viewHolder2.imageView03=convertView.findViewById(R.id.imageView3); convertView.setTag(viewHolder2); }else { viewHolder2= (ViewHolder2) convertView.getTag(); } viewHolder2.getTwo_title().setText(list.get(position).getTitle()); String thumbnail_pic_s1 = list.get(position).getThumbnail_pic_s(); String thumbnail_pic_s2 = list.get(position).getThumbnail_pic_s02(); String thumbnail_pic_s3 = list.get(position).getThumbnail_pic_s03(); ImageLoader.getInstance().displayImage(thumbnail_pic_s1,viewHolder2.getImageView01(),MyApp.getOptions()); ImageLoader.getInstance().displayImage(thumbnail_pic_s2,viewHolder2.getImageView02(),MyApp.getOptions()); ImageLoader.getInstance().displayImage(thumbnail_pic_s3,viewHolder2.getImageView03(),MyApp.getOptions()); break; } return convertView; } @Override public int getItemViewType(int position) { NewsBean.ResultBean.DataBean newbean=list.get(position); String thumbnail_pic_s03=newbean.getThumbnail_pic_s03(); if (TextUtils.isEmpty(thumbnail_pic_s03)){ return TYPE_1; } return TYPE_2; } @Override public int getViewTypeCount() { return 2; } class ViewHolder{ private ImageView type_iamge; private TextView type_title; public ViewHolder() { this.type_iamge = this.type_iamge; this.type_title = this.type_title; } public ImageView getType_iamge() { return type_iamge; } public void setType_iamge(ImageView type_iamge) { this.type_iamge = type_iamge; } public TextView getType_title() { return type_title; } public void setType_title(TextView type_title) { this.type_title = type_title; } } class ViewHolder2 { private TextView two_title; private ImageView imageView01; private ImageView imageView02; private ImageView imageView03; public ViewHolder2() { this.two_title = two_title; this.imageView01 = imageView01; this.imageView02 = imageView02; this.imageView03 = imageView03; } public TextView getTwo_title() { return two_title; } public void setTwo_title(TextView two_title) { this.two_title = two_title; } public ImageView getImageView01() { return imageView01; } public void setImageView01(ImageView imageView01) { this.imageView01 = imageView01; } public ImageView getImageView02() { return imageView02; } public void setImageView02(ImageView imageView02) { this.imageView02 = imageView02; } public ImageView getImageView03() { return imageView03; } public void setImageView03(ImageView imageView03) { this.imageView03 = imageView03; } } }
//MyApp
public class MyApp extends Application { @Override public void onCreate() { super.onCreate(); //初始化ImageLoader //创建默认的ImageLoader配置参数 ImageLoaderConfiguration configuration = ImageLoaderConfiguration .createDefault(this); //Initialize ImageLoader with configuration. ImageLoader.getInstance().init(configuration); } public static DisplayImageOptions getOptions() { DisplayImageOptions options = new DisplayImageOptions.Builder() .showImageOnLoading(R.mipmap.ic_launcher) // resource or drawable .showImageForEmptyUri(R.mipmap.ic_launcher) // resource or drawable .showImageOnFail(R.mipmap.ic_launcher) // resource or drawable .cacheInMemory(true) // default .cacheOnDisk(true) // default .displayer(new SimpleBitmapDisplayer()) // default .handler(new Handler()) // default .build(); return options; } }
//主Activity
public class MainActivity extends AppCompatActivity { public static String one_url="http://v.juhe.cn/toutiao/index?type=&key=2f41498b35e69877fc56dc96776e5d1f"; private static final String TAG = "MainActivity====="; private ListView listView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //初始话界面 initViews(); //从网络获取数据 initDatas(); } private void initDatas() { HttpUtils httpUtils=HttpUtils.getInstance(); httpUtils.get(one_url); httpUtils.setHttpUtilsListener(new HttpUtils.HttpUtilListener() { @Override public void getSuccess(String json) { Log.d(TAG, "成功 "+json); Gson gson=new Gson(); NewsBean bean=gson.fromJson(json,NewsBean.class); List<NewsBean.ResultBean.DataBean>list=bean.getResult().getData(); ListAdapter listAdapter=new ListAdapter(MainActivity.this,list); listView.setAdapter(listAdapter); } @Override public void getError(String error) { Log.d(TAG, "失败"+error); } }); } private void initViews() { listView=findViewById(R.id.main_listview); } }