基于App+SQLITE商城购物

package com.example.smallshop; import android.app.AlertDialog; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import androidx.fragment.app.Fragment; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; import com.android.volley.RequestQueue; import com.android.volley.Response; import com.android.volley.VolleyError; import com.android.volley.toolbox.StringRequest; import com.android.volley.toolbox.Volley; import com.example.smallshop.database.DBUser; public class BlankFragment_me extends Fragment { public BlankFragment_me() { // Required empty public constructor } public static BlankFragment_me newInstance( ) { BlankFragment_me fragment = new BlankFragment_me(); return fragment; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } public static RequestQueue requestQueue;//请求队列声明 TextView myname,sentence; LinearLayout myrecord,change_address,myinfo,about,contact; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v=inflater.inflate(R.layout.fragment_blank_me, container, false); myrecord=v.findViewById(R.id.myrecord); myname=v.findViewById(R.id.myname); change_address=v.findViewById(R.id.change_address); myinfo=v.findViewById(R.id.myinfo); about=v.findViewById(R.id.about); contact=v.findViewById(R.id.contact); myname.setText("欢迎您！亲爱的"+Login.user.getName()); about.setOnClickListener(this::onClick_); change_address.setOnClickListener(this::onClick_); myrecord.setOnClickListener(this::onClick_); contact.setOnClickListener(this::onClick_); myinfo.setOnClickListener(this::onClick_); //sentence.setText(getNeed()); //创建请求队列 requestQueue= Volley.newRequestQueue(getContext()); //reqString(); return v; } void onClick_(View v){ switch (v.getId()){ case R.id.myrecord: //Toast.makeText(getContext(), "record", Toast.LENGTH_SHORT).show(); Intent intent=new Intent(getActivity(),MyRecord.class); startActivity(intent); break; case R.id.contact: joinQQ(); break; case R.id.myinfo: Intent intent1=new Intent(getActivity(),MyInfo.class); startActivity(intent1); break; case R.id.change_address: changeAddress(); break; case R.id.about: Intent intent3=new Intent(getActivity(),About.class); startActivity(intent3); break; } } //修改收货地址 void changeAddress(){ View view= LayoutInflater.from(getActivity() ) .inflate(R.layout.layout_change_address, null); AlertDialog.Builder customBuilder= new AlertDialog.Builder(getContext()) .setTitle("修改收货地址") .setView(view) ; AlertDialog dialog= customBuilder.create(); dialog.show(); //自定义按钮并注册监听器 EditText ed_number=view.findViewById(R.id.ed_number); ed_number.setHint(Login.user.getAddress()); Button btn_ok=view.findViewById(R.id.btn_ok); Button btn_cancel=view.findViewById(R.id.btn_cancel); btn_ok.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //Toast.makeText(getActivity(), ed_number.getText().toString(), Toast.LENGTH_LONG).show(); DBUser db=new DBUser(getActivity()); Login.user.setAddress(ed_number.getText().toString()); if(db.change(Login.user)){ Toast.makeText(getContext(), "修改成功！", Toast.LENGTH_SHORT).show(); }else{ Toast.makeText(getContext(), "修好失败！", Toast.LENGTH_SHORT).show(); } dialog.dismiss(); } }); btn_cancel.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { dialog.dismiss(); } }); } void joinQQ() { try { String url = "mqqwpa://im/chat?chat_type=wpa&uin=" + "2684976663"; startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url))); } catch (Exception e) { e.printStackTrace(); Toast.makeText(getContext(), "客服很忙暂时没在线喔亲", Toast.LENGTH_SHORT).show(); } } String address = "http://api.tianapi.com/tianqi/index?key=1475202419d304f2b1a0376fd24619a5"; String city="杭州市"; //得到api返回的数据 void reqString(){ //String url=address+"&city="+city; String url="https://v1.hitokoto.cn/"; StringRequest stringRequest=new StringRequest(url, new Response.Listener<String>() { @Override public void onResponse(String s) { Log.d("***********",s.toString()); sentence.setText(getNeed(s)); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError volleyError) { Log.d("--------",volleyError.toString()); } });//字符串 requestQueue.add(stringRequest); } String getNeed(String jsonString){ String n=""; int times=0; char[] myCharArray; myCharArray = jsonString.toCharArray(); for(int i=0;i<myCharArray.length;i++){ if(myCharArray[i]==':' ){ times++; continue; } if(times==3 && myCharArray[i]==',' ){ break; } if(times==3){ n+=myCharArray[i]; } } Log.d("sentence =",n); return n; } }