Android RecyclerView的卡頓問題的解決方法

package com.example.jin.localapp;
import android.graphics.drawable.Drawable;

/**
 * Created by Jin on 2016/11/8.
 */
public class AppBean {
  private CharSequence name;
  private String packageName;
  private Drawable icon;
  //這類代碼可別逞英雄手動寫哦，IDE（Android Studio和Eclipse都有的）里可以直接生成
  public CharSequence getName() {
    return name;
  }
  public void setName(CharSequence name) {
    this.name = name;
  }
  public String getPackageName() {
    return packageName;
  }
  public void setPackageName(String packageName) {
    this.packageName = packageName;
  }
  public Drawable getIcon() {
    return icon;
  }
  public void setIcon(Drawable icon) {
    this.icon = icon;
  }
}

  private List<AppBean> mList;//mList的泛型換成AppBean
  private void initData() {//然后只需要改這個方法
    mList = new ArrayList<>();
    manager = getPackageManager();
    List<PackageInfo> list = manager.getInstalledPackages(0);//獲取已安裝的全部應(yīng)用
    for (PackageInfo info : list) {
      if ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
        AppBean bean = new AppBean();
        bean.setName(info.applicationInfo.loadLabel(manager));
        bean.setPackageName(info.packageName);
        bean.setIcon(info.applicationInfo.loadIcon(manager));
        mList.add(bean);
      }
    }
    //拿到數(shù)據(jù)再setAdapter
    mainRcv.setLayoutManager(new LinearLayoutManager(this));
    mainRcv.setHasFixedSize(true);
    mainRcv.setAdapter(new AppAdapter(this, mList));
  }

  private List<AppBean> appList;
  //同樣這邊的類型換過來
  public AppAdapter(Context context, List<AppBean> appList) {
    this.context = context;
    this.appList = appList;
    inflater = LayoutInflater.from(context);
    manager = context.getPackageManager();
  }
  //然后也只需要改這個方法
  @Override
  public void onBindViewHolder(AppHolder holder, final int position) {
    final AppBean bean = appList.get(position);
    holder.itemIconIv.setImageDrawable(bean.getIcon());//圖標(biāo)
    holder.itemNameTv.setText(bean.getName());//名稱
    holder.itemPackageTv.setText(bean.getPackageName());//包名

    holder.view.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        Intent intent = new Intent(manager.getLaunchIntentForPackage(bean.getPackageName()));//根據(jù)包名啟動此應(yīng)用
        context.startActivity(intent);
      }
    });
  }

<?xml version="1.0" encoding="utf-8"?>
<resources>

  <color name="colorPrimary">#3F51B5</color>
  <color name="colorPrimaryDark">#303F9F</color>
  <color name="colorAccent">#FF4081</color>
  <color name="colorWhite">#ffffff</color>
  <color name="colorPink">#f8bbd0</color>

</resources>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

  <item android:state_selected="true" android:drawable="@color/colorWhite" />　　
  <item android:state_focused="true" android:drawable="@color/colorPink" />　　
  <item android:state_pressed="true" android:drawable="@color/colorPink" />
  <item android:drawable="@color/colorWhite"/>

</selector>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:background="@drawable/item_selector"
  android:layout_width="match_parent"
  android:layout_height="60dp">

<!-- 中間內(nèi)容無須修改，略-->

</RelativeLayout>