第二阶段7

开始搞可视化

package com.lh.finaltest.ui.Charts;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.webkit.WebView;

import android.widget.Button;

import android.widget.EditText;

import android.widget.RadioButton;

import android.widget.TextView;

import androidx.annotation.NonNull;

import androidx.annotation.Nullable;

import androidx.fragment.app.Fragment;

import com.lh.finaltest.MainActivity;

import com.lh.finaltest.R;

import com.lh.finaltest.db.Service.Service;

public class ChartsFragment extends Fragment {

    private ChartsViewModel mViewModel;

    private WebView webView;

    private Service service;

    private String userid;

    private Button search_btn;

    private RadioButton bar_btn,line_btn;

    private EditText begin_date,end_date;

    private String result;

    private TextView tip_in,tip_out;

    private String allcharge_in_out;

    public static ChartsFragment newInstance() {

        return new ChartsFragment();

    }

    @Override

    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,

                             @Nullable Bundle savedInstanceState) {

        return inflater.inflate(R.layout.charts_fragment, container, false);

    }

    @Override

    public void onActivityCreated(@Nullable Bundle savedInstanceState) {

        super.onActivityCreated(savedInstanceState);

        bar_btn=requireActivity().findViewById(R.id.charts_bar);

        line_btn=requireActivity().findViewById(R.id.charts_line);

        begin_date=requireActivity().findViewById(R.id.begin_date);

        end_date=requireActivity().findViewById(R.id.end_date);

        search_btn=requireActivity().findViewById(R.id.search_btn);

        tip_in=requireActivity().findViewById(R.id.charts_tip_in);

        tip_out=requireActivity().findViewById(R.id.charts_tip_out);

        userid= MainActivity.getUserid();

        service=new Service(getContext());

        webView=requireActivity().findViewById(R.id.webView);

        webView.getSettings().setAllowFileAccess(true);

        webView.getSettings().setJavaScriptEnabled(true);

        webView.loadUrl("file:///android_asset/echarts.html");

        search_btn.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                String bdate=begin_date.getText().toString();

                String edate=end_date.getText().toString();

                result=service.chartsData(bdate,edate,userid);

                allcharge_in_out=service.getAllChargeMoney(bdate,edate,userid);

                tip_in.setText("总收入:"+allcharge_in_out.split(";")[0]);

                tip_out.setText("总支出:"+allcharge_in_out.split(";")[1]);

                webView.loadUrl("javascript:createChart("+result+","+(bar_btn.isChecked()?"'bar'":"'line'")+");");

            }

        });

        line_btn.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                webView.loadUrl("javascript:createChart("+result+","+(bar_btn.isChecked()?"'bar'":"'line'")+");");

            }

        });

        bar_btn.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                webView.loadUrl("javascript:createChart("+result+","+(bar_btn.isChecked()?"'bar'":"'line'")+");");

            }

        });

        // TODO: Use the ViewModel

    }

}

package com.lh.finaltest.ui.Charts;

import androidx.fragment.app.Fragment;

import androidx.lifecycle.MutableLiveData;

import androidx.lifecycle.ViewModel;

import androidx.lifecycle.ViewModelProvider;

public class ChartsViewModel extends ViewModel {

    private static ChartsViewModel INSTANCE;

    public static ChartsViewModel getINSTANCE(Fragment fragment){

        if (INSTANCE==null){

            INSTANCE=new ViewModelProvider(fragment).get(ChartsViewModel.class);

        }

        return INSTANCE;

    }

    public MutableLiveData<String> getResult() {

        return result;

    }

    public void setResult(String result){

        getResult().setValue(result);

    }

    private MutableLiveData<String> result=new MutableLiveData<>();

    private MutableLiveData<String[]>  names=new MutableLiveData<>();

    private MutableLiveData<Double[]>  datas=new MutableLiveData<>();

    public MutableLiveData<String[]> getNames() {

        return names;

    }

    public MutableLiveData<Double[]> getDatas() {

        return datas;

    }

    public void setNames(String names[]){

        getNames().setValue(names);

    }

    public void setDatas(Double datas[]){

        getDatas().setValue(datas);

    }

    // TODO: Implement the ViewModel

}