灭霸-个人冲刺第二天

 1， 昨天的成就：

　　a)       完成的任务：登陆界面，注册界面

　　b)       所花时间：4h

　　c)        还剩余2h

2， 遇到的困难：

　　a)       跳转时，页面设置需要多连接

3， 今天的任务：

　　a)       设置主页面

　　b)       实现瀑布流

package com.example.a13313.瀑布流;

import android.graphics.Rect;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.view.View;
import android.widget.Toast;

import com.example.a13313.R;

public class PuRecycleViewActivity extends AppCompatActivity {
    private RecyclerView mRvPu;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pu_recycle_view);
        mRvPu=(RecyclerView) findViewById(R.id.rv_pu);
        mRvPu.setLayoutManager(new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL));
        mRvPu.addItemDecoration(new MyDecoration());
        mRvPu.setAdapter(new StaggeredGridAdapter(PuRecycleViewActivity.this, new StaggeredGridAdapter.OnItemClickListener() {
            @Override
            public void onClick(int pos) {
                Toast.makeText(PuRecycleViewActivity.this,"click:"+pos,Toast.LENGTH_SHORT).show();
            }
        }));
    }
    class MyDecoration extends RecyclerView.ItemDecoration{
        @Override
        public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
            super.getItemOffsets(outRect, view, parent, state);
            int gap= getResources().getDimensionPixelSize(R.dimen.dividerHeight2);

            outRect.set(gap,gap,gap,gap);
        }
    }
}