RecyclerView 在v7包下
compile
'com.android.support:recyclerview-v7:25.3.1'
compile
'com.android.support:cardview-v7:25.3.1'
需要导入的依赖
布局
<
android.support.v4.widget.SwipeRefreshLayout
android:id=
"@+id/Swipe"
android:layout_width=
"match_parent"
android:layout_height=
"match_parent">
<
android.support.v7.widget.RecyclerView
android:id=
"@+id/Recycler"
android:layout_width=
"match_parent"
android:layout_height=
"match_parent"></
android.support.v7.widget.RecyclerView>
</
android.support.v4.widget.SwipeRefreshLayout>
这样可以系统自带下拉刷新
http:
//blog.csdn.net/u012124438/article/details/53495951
适配器继承这个类 RecyclerView.Adapter
代码里 线性布局和相对布局
LinearLayoutManager
linear =
new LinearLayoutManager(
this, LinearLayoutManager.HORIZONTAL,
false);
GridLayoutManager
grid =
new GridLayoutManager(
this,
3);
布局管理器
recycler.setLayoutManager(
grid);
设置进度条颜色
swipe.setColorSchemeColors(Color.RED, Color.BLUE, Color.YELLOW);
添加分隔线
recycler.addItemDecoration(
new DividerItemDecoration(
this,DividerItemDecoration.VERTICAL));
自定义View下划线的写法 onDraw方法 onDrawOver方法——是在数据上面
自定义下划线的类自定义的写法
public class MyDivider extends RecyclerView.ItemDecoration {
private Context
pContext;
private final int widthPixels;
public MyDivider(Context context) {
this.
pContext = context;
//获取手机屏幕的整个宽度
DisplayMetrics bm =
new DisplayMetrics();
((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(bm);
widthPixels = bm.widthPixels;
}
@Override
public void onDraw(Canvas c,
RecyclerView parent,
RecyclerView.State state) {
super.onDraw(c, parent, state);
//画笔
Paint paint =
new Paint();
paint.setColor(Color.BLACK);
// c.drawCircle(300, 400, 100, paint);
// c.clipRect(0,100,1000,110);
// c.drawRect(rectF,paint);
//找到总的Item的条目数
int childCount = parent.getChildCount();
for (
int i =
0;
i < childCount;
i++) {
//获取每一个item控件视图
View childAt = parent.getChildAt(
i);
//获取控件的左位置和下位置
int right = childAt.getRight();
int top = childAt.getTop();
int left = childAt.getLeft();
int bottom = childAt.getBottom();
//矩形图片
RectF rectF =
new RectF(left, bottom,
widthPixels, bottom +
6);
c.drawRect(rectF, paint);
}
}
//在上面
@Override
public void onDrawOver(Canvas c,
RecyclerView parent,
RecyclerView.State state) {
super.onDrawOver(c, parent, state);
}
}
---------------------------------------------------
LayoutManager: 管理RecyclerView的结构.
Adapter: 处理每个Item的显示.
ItemDecoration: 添加每个Item的装饰.
ItemAnimator: 负责添加\移除\重排序时的动画效果.
class MyViewHolder extends RecyclerView.ViewHolder {
private final ImageView
image;
private final TextView
textview;
public MyViewHolder(View itemView) {
super(itemView);
image = (ImageView) itemView.findViewById(R.id.item_image);
textview = (TextView) itemView.findViewById(R.id.item_text);
}
public RecycleAdapter(Context context) {
this.mcontext = context;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
View inflate = View.inflate(mcontext, R.layout.item,
null);
MyViewHolder holder =
new MyViewHolder(inflate);
return holder;
}
@Override
public void onBindViewHolder(
RecyclerView.ViewHolder holder,
int position) {
MyViewHolder vh = (
MyViewHolder) holder;
vh.
textview.setText(list.get(position).getTitle());
mhomePresent.getImage(vh.
image,list.get(position).getThumbnail_pic_s());
}
@Override
public int getItemCount() {
return list.size();
}
public void setDatas(HomeBean homeBean) {
if (homeBean !=
null) {
this.list.addAll(homeBean.getResult().getData());
}
}
}
}
package com.baway.myrecycleview.view.activity;
import android.graphics.Color;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import com.baway.myrecycleview.R;
import com.baway.myrecycleview.mondel.HomeBean;
import com.baway.myrecycleview.present.HomePresent;
import com.baway.myrecycleview.present.MyDivider;
import com.baway.myrecycleview.view.adapter.RecycleAdapter;
import com.baway.myrecycleview.view.iview.HomeView;
public class MainActivity extends AppCompatActivity
implements HomeView<HomeBean>, SwipeRefreshLayout.OnRefreshListener {
private SwipeRefreshLayout
swipeRefreshLayout;
private RecyclerView
recyclerView;
private HomePresent
homePresent;
private RecycleAdapter
adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initData();
}
private void initData() {
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swiperefresh_layout);
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
homePresent =
new HomePresent();
homePresent.attachView(
this);
// LinearLayoutManager manager = new LinearLayoutManager(this);
GridLayoutManager manager =
new GridLayoutManager(
this,
3);
// StaggeredGridLayoutManager manager=new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.HORIZONTAL);
recyclerView.setLayoutManager(manager);
swipeRefreshLayout.setColorSchemeColors(Color.RED, Color.GREEN);
adapter =
new RecycleAdapter(
MainActivity.
this);
adapter.setpresent(
homePresent);
recyclerView.setAdapter(
adapter);
recyclerView.addItemDecoration(
new MyDivider(
this));
recyclerView.addOnScrollListener(
new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(RecyclerView recyclerView,
int dx,
int dy) {
super.onScrolled(recyclerView, dx, dy);
LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
int itemCount = layoutManager.getItemCount();
int lastVisibleItemPosition = layoutManager.findLastVisibleItemPosition();
if (lastVisibleItemPosition +
1 == itemCount) {
swipeRefreshLayout.setRefreshing(
true);
}
}
});
//添加分割线
recyclerView.addItemDecoration(
new DividerItemDecoration(
this, DividerItemDecoration.VERTICAL));
homePresent.setData(HomeBean.
class);
}
@Override
public void callBack(HomeBean homeBean) {
adapter.setDatas(homeBean);
adapter.notifyDataSetChanged();
}
@Override
public void onRefresh() {
swipeRefreshLayout.setRefreshing(
false);
}
}
