RecyclerView和OKhttp
阿新 • • 發佈：2018-11-21
RecyclerView 刪除條目 新增 更新 多條目的使用
首先匯入依賴
加許可權
<uses-permission android:name="android.permission.INTERNET"/>
implementation 'com.android.support:recyclerview-v7:27.1.1' implementation 'com.squareup.okhttp3:okhttp:3.11.0' implementation 'com.google.code.gson:gson:2.2.4' implementation 'com.squareup.picasso:picasso:2.3.2' implementation 'com.google.guava:guava:16.0.1'
然後寫佈局 layout_main
<?xml version="1.0" encoding="utf-8"?> <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=".MainActivity"> <android.support.v7.widget.RecyclerView android:id="@+id/recycler" android:layout_width="match_parent" android:layout_height="wrap_content"/> </LinearLayout>
OKhttp工具類
public class Tools { public Tools() { } public Tools get(String path){ OkHttpClient okHttpClient = new OkHttpClient(); OkHttpClient.Builder builder = new OkHttpClient.Builder(); builder.writeTimeout(3000, TimeUnit.MILLISECONDS); builder.readTimeout(3000,TimeUnit.MILLISECONDS); StringBuffer buffer = new StringBuffer(); String s = buffer.toString(); RequestBody requestBody = RequestBody.create(MediaType.parse("application/json charset=utf-8"), s); Request request = new Request.Builder() .post(requestBody) .url(path) .build(); Call call = okHttpClient.newCall(request); call.enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { } @Override public void onResponse(Call call, Response response) throws IOException { int code = response.code(); if (code==200){ ResponseBody body = response.body(); String string = body.string(); data.getDate(string); } } }); return this; } private HttpDate data; public void setData(HttpDate data){ this.data=data; } public interface HttpDate{ void getDate(String s); } }
Bean類
public class User {
private String msg;
private int code;
private List<DataBean> data;
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public List<DataBean> getData() {
return data;
}
public void setData(List<DataBean> data) {
this.data = data;
}
public static class DataBean {
/**
* uniquekey : 1326bf3c4505783d4a964f81b6220e9d
* title : 美國被特朗普坑慘了！又有3個鐵桿盟友公開唱對臺戲！
* date : 2018-05-12 07:25
* category : 頭條
* author_name : 大國軍情
* url : http://mini.eastday.com/mobile/180512072544020.html
* thumbnail_pic_s : http://04.imgmini.eastday.com/mobile/20180512/20180512_fe1bf1b6ec00098f9455c84dc81e6763_cover_mwpm_03200403.jpg
* thumbnail_pic_s02 : http://04.imgmini.eastday.com/mobile/20180512/20180512_3f636fca330f2311583896aed3185196_cover_mwpm_03200403.jpg
* thumbnail_pic_s03 : http://04.imgmini.eastday.com/mobile/20180512/20180512_793fab03dadcd417bf2d8e5e1e48a0f5_cover_mwpm_03200403.jpg
*/
private String uniquekey;
private String title;
private String date;
private String category;
private String author_name;
private String url;
private String thumbnail_pic_s;
private String thumbnail_pic_s02;
private String thumbnail_pic_s03;
public String getUniquekey() {
return uniquekey;
}
public void setUniquekey(String uniquekey) {
this.uniquekey = uniquekey;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getAuthor_name() {
return author_name;
}
public void setAuthor_name(String author_name) {
this.author_name = author_name;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getThumbnail_pic_s() {
return thumbnail_pic_s;
}
public void setThumbnail_pic_s(String thumbnail_pic_s) {
this.thumbnail_pic_s = thumbnail_pic_s;
}
public String getThumbnail_pic_s02() {
return thumbnail_pic_s02;
}
public void setThumbnail_pic_s02(String thumbnail_pic_s02) {
this.thumbnail_pic_s02 = thumbnail_pic_s02;
}
public String getThumbnail_pic_s03() {
return thumbnail_pic_s03;
}
public void setThumbnail_pic_s03(String thumbnail_pic_s03) {
this.thumbnail_pic_s03 = thumbnail_pic_s03;
}
}
}
RecyclerViewAdapter類
public class RecyclerViewAdapter extends Adapter {
private List<User.DataBean> list;
private Context mcontext;
//3.全域性變數
private RecycleitemClick click;
public RecyclerViewAdapter(Context context, List<User.DataBean> list) {
this.mcontext=context;
this.list=list;
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int position) {
View view;
RecyclerView.ViewHolder holder = null;
switch (position) {
case 1:
view = LayoutInflater.from(mcontext).inflate(R.layout.item, viewGroup, false);
//傳入點選事件
holder = new MyViewHolder(view, click);
break;
case 2:
view = LayoutInflater.from(mcontext).inflate(R.layout.item1, viewGroup, false);
holder = new MyViewHolder2(view, click);
break;
}
return holder;
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int position) {
User.DataBean bean = list.get(position);
switch (getItemViewType(position)) {
case 1:
Picasso.with(mcontext).load(bean.getThumbnail_pic_s()).into(((MyViewHolder) viewHolder).image1);
((MyViewHolder) viewHolder).text1.setText(bean.getAuthor_name());
break;
case 2:
Picasso.with(mcontext).load(bean.getThumbnail_pic_s()).into(((MyViewHolder2) viewHolder).image2);
Picasso.with(mcontext).load(bean.getThumbnail_pic_s02()).into(((MyViewHolder2) viewHolder).image3);
((MyViewHolder2) viewHolder).text2.setText(bean.getAuthor_name());
break;
}
}
@Override
public int getItemViewType(int position) {
if (position % 2 != 0) {
return 1;
} else {
return 2;
}
}
//刪除
public void removeDate(int position) {
list.remove(position);
notifyItemRemoved(position);
notifyDataSetChanged();
}
//新增
public void addDate(int position) {
list.add(position, list.get(position));
notifyDataSetChanged();
}
//更新
public void updataDate(int position) {
list.set(position, list.get(position));
notifyItemChanged(position);
}
@Override
public int getItemCount() {
return list == null ? 0 : list.size();
}
//定義介面
public interface RecycleitemClick {
void OnItemView(View view, int postion);
}
//例項化
public void setRecyclerOnClick(RecycleitemClick click) {
this.click = click;
}
class MyViewHolder extends RecyclerView.ViewHolder {
ImageView image1;
TextView text1;
public MyViewHolder(View itemView, final RecycleitemClick click) {
super(itemView);
text1 = itemView.findViewById(R.id.text1);
image1 = itemView.findViewById(R.id.image1);
//條目點選事件
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
click.OnItemView(view, getAdapterPosition());
}
});
}
}
class MyViewHolder2 extends RecyclerView.ViewHolder {
TextView text2;
ImageView image2;
ImageView image3;
public MyViewHolder2(View itemView, final RecycleitemClick click) {
super(itemView);
text2 = itemView.findViewById(R.id.text2);
image2 = itemView.findViewById(R.id.image2);
image3 = itemView.findViewById(R.id.image3);
//條目點選事件
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
click.OnItemView(view, getAdapterPosition());
}
});
}
}
}
MainActvity
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private RecyclerViewAdapter recyclerViewAdapter;
private List<User.DataBean> list=new ArrayList<>();
private String path="http://www.xieast.com/api/news/news.php?page=1";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = findViewById(R.id.recycler);
Tools tools = new Tools();
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(linearLayoutManager);
DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);
dividerItemDecoration.setDrawable(ContextCompat.getDrawable(this,R.drawable.fen));
recyclerView.addItemDecoration(dividerItemDecoration);
tools.get(path).setData(new Tools.HttpDate() {
@Override
public void getDate(String s) {
Gson gson = new Gson();
User user = gson.fromJson(s, User.class);
list.addAll(user.getData());
runOnUiThread(new Runnable() {
@Override
public void run() {
recyclerViewAdapter = new RecyclerViewAdapter(MainActivity.this,list);
recyclerViewAdapter.setRecyclerOnClick(new RecyclerViewAdapter.RecycleitemClick() {
@Override
public void OnItemView(View view, int postion) {
recyclerViewAdapter.updataDate(postion);
recyclerViewAdapter.removeDate(postion);
recyclerViewAdapter.addDate(postion);
Toast.makeText(MainActivity.this,postion+"",Toast.LENGTH_SHORT).show();
}
});
recyclerView.setAdapter(recyclerViewAdapter);
}
});
}
});
}
}
item佈局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:id="@+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="aaaaa"
android:textColor="@color/colorAccent" />
<ImageView
android:id="@+id/image1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
tools:srcCompat="@tools:sample/avatars" />
</LinearLayout>
多條目item2
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="bbbb"
android:textColor="@color/colorPrimary" />
<ImageView
android:id="@+id/image2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
tools:srcCompat="@tools:sample/avatars" />
<ImageView
android:id="@+id/image3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
tools:srcCompat="@tools:sample/avatars" />
</LinearLayout>
分割線佈局 在drawable裡建立shape
<?xml version="1.0" encoding="utf-8"?>
<shape
android:shape="rectangle"
xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:type="linear"
android:startColor="@color/colorAccent"
/>
<size
android:height="5dp"
/>
</shape>