一、配置
1.修改gradle文件夹下的gradle-wrapper.properties修改为：
distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
2、在工程的buildgradle中导入
dependencies {
classpath 'org.greenrobot:greendao-gradle-plugin:3.2.2'
}
3、在项目的buildgradle中导入
//导入插件
apply plugin: 'com.android.application'
apply plugin: 'org.greenrobot.greendao'
//在dependencies中添加如下代码
dependencies {
compile 'org.greenrobot:greendao:3.2.2'
}
二、工具类
public classDaosingleton {private staticDaosingletondaosingleton;privateDaosingleton() { }publicBookDao getdao(Context context) { DaoMaster.DevOpenHelper devOpenHelper =newDaoMaster.DevOpenHelper(context,"students.db",null); DaoMaster daoMaster =newDaoMaster(devOpenHelper.getReadableDb()); DaoSession daoSession = daoMaster.newSession(); BookDao studentsDao = daoSession.getBookDao();returnstudentsDao; }public staticDaosingleton getDaosingleton() {if(daosingleton==null) {synchronized(Daosingleton.class) {if(daosingleton==null) {daosingleton=newDaosingleton(); } } }returndaosingleton; }}
三、简单使用
public classMain2ActivityextendsAppCompatActivityimplementsView.OnClickListener, AdapterView.OnItemLongClickListener {privateButtoninsert;privateProgressBarbar;privateListViewlistview;privateBookDaogetdao;privateMyAdaptermyAdapter;privateListlist=null;privatePopupWindowwindow;@Overrideprotected voidonCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2);getdao= Daosingleton.getDaosingleton().getdao(Main2Activity.this); initView(); initData(); }private voidinitPro(finalList list1) { Handler handler=newHandler(); handler.postDelayed(newRunnable() {@Overridepublic voidrun() { runOnUiThread(newRunnable() {@Overridepublic voidrun() {bar.setVisibility(View.GONE);myAdapter.notifys(list1); } }); } },2000); }private voidinitView() {insert= (Button) findViewById(R.id.insert);bar= (ProgressBar) findViewById(R.id.bar);listview= (ListView) findViewById(R.id.listview);/* initPro();*/insert.setOnClickListener(this); }private voidinitData() {list=getdao.queryBuilder().build().list();myAdapter=newMyAdapter(Main2Activity.this,list);listview.setAdapter(myAdapter);myAdapter.notifys(list);listview.setOnItemLongClickListener(this); }@Overridepublic voidonClick(View v) {switch(v.getId()) {caseR.id.insert: Intent intent=newIntent(Main2Activity.this,Main3Activity.class); startActivity(intent);break; } }@Overridepublic booleanonItemLongClick(AdapterView adapterView, View view,final inti,longl) { View view1=View.inflate(Main2Activity.this,R.layout.view,null);window=newPopupWindow(view1,300,300);window.showAsDropDown(listview.getChildAt(i));window.setBackgroundDrawable(newColorDrawable(0));window.setOutsideTouchable(true); Button updata=(Button) view1.findViewById(R.id.updata); Button delete=(Button) view1.findViewById(R.id.delete); delete.setOnClickListener(newView.OnClickListener() {@Overridepublic voidonClick(View view) { Book book =list.get(i);myAdapter.de(book);getdao.delete(book);myAdapter.notifys(list);window.dismiss(); } }); updata.setOnClickListener(newView.OnClickListener() {@Overridepublic voidonClick(View view) { Book book =list.get(i);getdao.delete(book);myAdapter.de(book); Intent intent=newIntent(Main2Activity.this,Main3Activity.class); startActivity(intent);window.dismiss(); } });return false; }@Overrideprotected voidonResume() {super.onResume();list.clear();list=getdao.queryBuilder().list(); initPro(list); }}
4、
public classMyAdapterextendsBaseAdapter {privateContextcontext;privateListlist=newArrayList<>();privateViewHolderholder;privateBeanbean;publicMyAdapter(Context context, List list) {this.context= context;this.list= list; }@Overridepublic intgetCount() {returnlist.size(); }@OverridepublicObject getItem(intposition) {returnlist.get(position); }@Overridepublic longgetItemId(intposition) {returnposition; }@OverridepublicView getView(intposition, View convertView, ViewGroup parent) {if(convertView ==null) {holder=newViewHolder(); convertView = View.inflate(context, R.layout.item,null);holder.name= (TextView) convertView.findViewById(R.id.name);holder.company= (TextView) convertView.findViewById(R.id.company); convertView.setTag(holder); }else{holder= (ViewHolder) convertView.getTag(); }bean=list.get(position);holder.name.setText(bean.getName());holder.company.setText(bean.getCompany());returnconvertView; }static classViewHolder { TextViewname; TextViewcompany; }public voidnotifys(List list1){this.list= list1; notifyDataSetChanged(); }}
5、
public class MyAdapter extends RecyclerView.Adapter {
private final Context context;
private List list=new ArrayList<>();
private Listener listener;
public MyAdapter(Context context, List list3) {
this.context=context;
this.list=list3;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view=View.inflate(context,R.layout.item,null);
MyAdapter.ViewHordle holder=new MyAdapter.ViewHordle(view);
return holder;
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
MyAdapter.ViewHordle holder1= (MyAdapter.ViewHordle) holder;
holder1.name.setText(list.get(position).getName());
Glide.with(context)
.load(list.get(position).getFigure())
.error(R.drawable.d)
.into(holder1.tu);
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
listener.click(v,position);
}
});
}
@Override
public int getItemCount() {
return list.size();
}
class ViewHordle extends RecyclerView.ViewHolder{
ImageView tu;
TextView name;
public ViewHordle(View itemView) {
super(itemView);
tu= (ImageView) itemView.findViewById(R.id.images);
name= (TextView) itemView.findViewById(R.id.name);
}
}
public void setOnItemClickListener(Listener listener){
this.listener=listener;
}
interface Listener{
void click(View v,int position);
}
public void notifys(List list){
notifyDataSetChanged();
}
}
