Recycle 通过OKHTTP请求数据ImageLoader请求图片
依赖包：
compile 'com.android.support:mediarouter-v7:25.0.0'
compile 'com.android.support:recyclerview-v7:25.0.0'
compile 'com.squareup.okio:okio:1.5.0'
compile 'com.squareup.okhttp3:okhttp:3.2.0'
compile 'com.squareup.okhttp3:logging-interceptor:3.4.1'
compile 'com.google.code.gson:gson:2.8.2'
compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
compile 'com.android.support:appcompat-v7:25.0.0'
compile 'com.android.support:recyclerview-v7:25.0.0'
权限：
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
将Utils中的类粘贴好
将报错的Myapp删除掉通过提示再创建Myapp
Myapp中的代码：
public class MyApp extends Application {
public static MyApp mInstance;
@Override
public void onCreate() {
super.onCreate();
mInstance = this;
ImageLoaderConfiguration img=ImageLoaderConfiguration.createDefault(getApplicationContext());
ImageLoader.getInstance().init(img);
}
public static MyApp getInstance() {
return mInstance;
}
}
RecycleView具体使用参考
http://blog.csdn.net/lmj623565791/article/details/45059587；
本文出自:【张鸿洋的博客】
MainActivity中：
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private ArrayList<User> mDatas;
private HomeAdapter mAdapter;
String mpath="http://api.tianapi.com/social/?key=71e58b5b2f930eaf1f937407acde08fe&num=40";
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initData();
mRecyclerView = (RecyclerView) findViewById(R.id.id_recyclerview);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
mRecyclerView.addItemDecoration(new DividerItemDecoration(this,
DividerItemDecoration.VERTICAL_LIST));
mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL));
}
private void initData(){
OkHttp3Utils.getInstance().doGet(mpath, new GsonObjectCallback<MyNewsGons>() {
@Override
public void onUi(MyNewsGons myNewsGons) {
mDatas = new ArrayList<User>();
List<MyNewsGons.NewslistBean> newslist = myNewsGons.getNewslist();
for (MyNewsGons.NewslistBean mn:newslist) {
mDatas.add(new User(mn.getTitle(),mn.getPicUrl()));
}
mRecyclerView.setAdapter(mAdapter = new HomeAdapter(mDatas,MainActivity.this));
}
@Override
public void onFailed(Call call, IOException e) {
}
});
}
}
HomeAdapter:
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.nostra13.universalimageloader.core.ImageLoader;
import java.util.ArrayList;
/**
* Created by admin on 2017/10/12.
*/
public class HomeAdapter extends RecyclerView.Adapter<HomeAdapter.MyViewHolder>
{
ArrayList<User> mDatas;
Context context;
public HomeAdapter(ArrayList<User> mDatas, Context context) {
this.mDatas = mDatas;
this.context = context;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
MyViewHolder holder = new MyViewHolder(LayoutInflater.from(
context).inflate(R.layout.item_home, parent,
false));
return holder;
}
@Override
public int getItemCount()
{
return mDatas.size();
}
class MyViewHolder extends RecyclerView.ViewHolder
{
TextView tv;
ImageView img;
public MyViewHolder(View view)
{
super(view);
tv = (TextView) view.findViewById(R.id.id_num);
img= (ImageView) view.findViewById(R.id.img);
}
}
public interface OnItemClickLitener
{
void onItemClick(View view, int position);
void onItemLongClick(View view , int position);
}
private OnItemClickLitener mOnItemClickLitener;
public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener)
{
this.mOnItemClickLitener = mOnItemClickLitener;
}
@Override
public void onBindViewHolder(final MyViewHolder holder, final int position)
{
holder.tv.setText(mDatas.get(position).getTitle());
String url = mDatas.get(position).getUrl();
if (url.equals("")||url==null){
holder.img.setImageResource(R.mipmap.ic_launcher);
}else {
ImageLoader imgl = ImageLoader.getInstance();
imgl.displayImage(url, holder.img);
}
// 如果设置了回调，则设置点击事件
if (mOnItemClickLitener != null)
{
holder.itemView.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
int pos = holder.getLayoutPosition();
mOnItemClickLitener.onItemClick(holder.itemView, pos);
}
});
holder.itemView.setOnLongClickListener(new View.OnLongClickListener()
{
@Override
public boolean onLongClick(View v)
{
int pos = holder.getLayoutPosition();
mOnItemClickLitener.onItemLongClick(holder.itemView, pos);
return false;
}
});
}
}
}
DividerItemDecoration
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
public class DividerItemDecoration extends RecyclerView.ItemDecoration {
private static final int[] ATTRS = new int[]{
android.R.attr.listDivider
};
public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;
public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;
private Drawable mDivider;
private int mOrientation;
public DividerItemDecoration(Context context, int orientation) {
final TypedArray a = context.obtainStyledAttributes(ATTRS);
mDivider = a.getDrawable(0);
a.recycle();
setOrientation(orientation);
}
public void setOrientation(int orientation) {
if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {
throw new IllegalArgumentException("invalid orientation");
}
mOrientation = orientation;
}
@Override
public void onDraw(Canvas c, RecyclerView parent) {
if (mOrientation == VERTICAL_LIST) {
drawVertical(c, parent);
} else {
drawHorizontal(c, parent);
}
}
public void drawVertical(Canvas c, RecyclerView parent) {
final int left = parent.getPaddingLeft();
final int right = parent.getWidth() - parent.getPaddingRight();
final int childCount = parent.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = parent.getChildAt(i);
android.support.v7.widget.RecyclerView v = new android.support.v7.widget.RecyclerView(parent.getContext());
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
.getLayoutParams();
final int top = child.getBottom() + params.bottomMargin;
final int bottom = top + mDivider.getIntrinsicHeight();
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
public void drawHorizontal(Canvas c, RecyclerView parent) {
final int top = parent.getPaddingTop();
final int bottom = parent.getHeight() - parent.getPaddingBottom();
final int childCount = parent.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = parent.getChildAt(i);
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
.getLayoutParams();
final int left = child.getRight() + params.rightMargin;
final int right = left + mDivider.getIntrinsicHeight();
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
@Override
public void getItemOffsets(Rect outRect, int itemPosition, RecyclerView parent) {
if (mOrientation == VERTICAL_LIST) {
outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());
} else {
outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);
}
}
}
MyNewsGons
这个是GsonFormat自己生成就好
User
public class User {
private String title;
private String url;
public User(String title, String url) {
this.title = title;
this.url = url;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
}
然后就是布局了
activity布局：
<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" >
<android.support.v7.widget.RecyclerView
android:id="@+id/id_recyclerview"
android:divider="#ffff0000"
android:dividerHeight="10dp"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
item_home
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:background="#44ff0000"
android:layout_margin="20dp"
android:layout_height="wrap_content" >
<ImageView
android:id="@+id/img"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/id_num"
android:layout_below="@id/img"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="1" />
</RelativeLayout>
最后是MyappApp中修改
public class MyApp extends Application {
public static MyApp mInstance;
@Override
public void onCreate() {
super.onCreate();
mInstance = this;
ImageLoaderConfiguration img= ImageLoaderConfiguration.createDefault(getApplicationContext());
ImageLoader.getInstance().init(img);
}
public static MyApp getInstance() {
return mInstance;
}
}
再在清单文件中配好name就行了
