仿keep个人中心界面，实现上滑隐藏图片，下滑显示图片
activity_mode.xml
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ModeActivity.java
package com.zhoujian.mykeep.activity;import android.graphics.Color;import android.os.Bundle;import android.support.design.widget.AppBarLayout;import android.support.design.widget.CollapsingToolbarLayout;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.DefaultItemAnimator;import android.support.v7.widget.DividerItemDecoration;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.Toolbar;import android.util.Log;import android.view.MenuItem;import android.view.View;import android.widget.Toast;import com.zhoujian.mykeep.R;import com.zhoujian.mykeep.adapter.MainAdapter;import com.zhoujian.mykeep.bean.Person;import java.util.ArrayList;/** * Created by zhoujian on 2017/3/14. */public class ModeActivity extends AppCompatActivity{ public static final String TAG = "ModeActivity"; private RecyclerView mRecyclerView; private ArrayList personList; private MainAdapter adapter; @Override protected void onCreate( Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_mode); initData(); initView(); } private void initData() { personList = new ArrayList (); Person mPerson0= new Person("林黛玉"); personList.add(mPerson0); Person mPerson1= new Person("薛宝钗"); personList.add(mPerson1); Person mPerson2= new Person("贾元春"); personList.add(mPerson2); Person mPerson3= new Person("贾迎春"); personList.add(mPerson3); Person mPerson4= new Person("贾探春"); personList.add(mPerson4); Person mPerson5= new Person("贾惜春"); personList.add(mPerson5); Person mPerson6= new Person("史湘云"); personList.add(mPerson6); Person mPerson7= new Person("王熙凤"); personList.add(mPerson7); Person mPerson8= new Person("秦可卿"); personList.add(mPerson8); Person mPerson9= new Person("贾宝玉"); personList.add(mPerson9); } private void initView() { final Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar); toolbar.setTitleTextColor(Color.TRANSPARENT); toolbar.inflateMenu(R.menu.menu_search); toolbar.setNavigationOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { finish(); } }); toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { switch (item.getItemId()){ case R.id.item_search: //点击设置 Toast.makeText(ModeActivity.this, "按钮被点击了", Toast.LENGTH_SHORT).show(); break; } return false; } }); AppBarLayout app_bar_layout = (AppBarLayout)findViewById(R.id.app_bar_layout); final CollapsingToolbarLayout collapsing_toolbar_layout = (CollapsingToolbarLayout)findViewById(R.id.collapsing_toolbar_layout); collapsing_toolbar_layout.setTitle(""); collapsing_toolbar_layout.setCollapsedTitleTextColor(getResources().getColor(R.color.white)); collapsing_toolbar_layout.setExpandedTitleColor(getResources().getColor(R.color.white)); collapsing_toolbar_layout.setExpandedTitleColor(Color.TRANSPARENT); app_bar_layout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() { @Override public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) { Log.e(TAG,"appBarLayoutHeight:"+appBarLayout.getHeight()+" getTotalScrollRange:"+appBarLayout.getTotalScrollRange()+" offSet:"+verticalOffset); if(Math.abs(verticalOffset) >= appBarLayout.getTotalScrollRange()){ toolbar.setTitleTextColor(getResources().getColor(R.color.white)); collapsing_toolbar_layout.setTitle("keep"); }else{ collapsing_toolbar_layout.setTitle(""); } } }); mRecyclerView =(RecyclerView) findViewById(R.id.id_recyclerview); adapter = new MainAdapter(ModeActivity.this, personList); mRecyclerView.setLayoutManager(new LinearLayoutManager(ModeActivity.this)); mRecyclerView.addItemDecoration(new DividerItemDecoration(ModeActivity.this,DividerItemDecoration.VERTICAL)); // 设置item动画 mRecyclerView.setItemAnimator(new DefaultItemAnimator()); mRecyclerView.setAdapter(adapter); }}复制代码