如何在选择的条形图值上显示近端位置的弹出菜单？ [英] How to display popup menu in near position on barchart value selected ?

问题描述

如何在BarChart项目的近端位置显示弹出菜单点击？



我创建了一个应用程序来显示条形图项目点击弹出菜单。问题是弹出菜单没有显示在单击的条形图项目附近。它始终显示在顶部。所以请帮我在条形图项目点击附近显示弹出菜单。



我尝试过：



主要活动：

How to Display Popup Menu in Near Position on BarChart Item Click ?

I have created a app to to show popup menu on Bar chart item click. The Problem is the popup menu is not showing near to the bar chart item clicked. it always shows on top . So help me out to show popup menu near to bar chart item click .

What I have tried:

Main activity:

package com.example.saravanakumars.spinnerchart;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    String[] chart = {"Select", "Bar Chart", "Pie Chart"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final Spinner spinner = (Spinner) findViewById(R.id.spinner);
        ArrayAdapter aa = new ArrayAdapter(this, android.R.layout.simple_spinner_item, chart);
        aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(aa);
        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                                       int arg2, long arg3) {

                String items = spinner.getSelectedItem().toString();
                switch (items) {
                    case "Select":
                        Toast.makeText(getApplicationContext(),"Please Select Bar or Pie Chart",Toast.LENGTH_SHORT).show();
                        break;
                    case "Bar Chart":
                        Intent intent = new Intent(MainActivity.this, barchart.class);
                        startActivity(intent);
                        break;
                    case "Pie Chart":
                        Intent p = new Intent(MainActivity.this, piechart.class);
                        startActivity(p);
                        break;
                }


            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub

            }

        });
    }

            @Override
            public boolean onCreateOptionsMenu(Menu menu) {
                // Inflate the menu; this adds items to the action bar if it is present.
                getMenuInflater().inflate(R.menu.activity_main, menu);
                return true;
            }

        }

Barchart.java

Barchart.java

package com.example.saravanakumars.spinnerchart;

/**
 * Created by saravanakumars on 9/18/2017.
 */
import java.util.ArrayList;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.widget.PopupMenu;
import android.widget.Toast;

import com.github.mikephil.charting.charts.BarChart;
import com.github.mikephil.charting.data.BarData;
import com.github.mikephil.charting.data.BarDataSet;
import com.github.mikephil.charting.data.BarEntry;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.highlight.Highlight;
import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
import com.github.mikephil.charting.utils.ColorTemplate;
import java.util.ArrayList;
public class barchart extends AppCompatActivity {
    BarChart chart ;
    ArrayList<BarEntry> BARENTRY ;
    ArrayList<String> BarEntryLabels ;
    BarDataSet Bardataset ;
    BarData BARDATA ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.bar_chart);
        chart = (BarChart) findViewById(R.id.barchart);

        BARENTRY = new ArrayList<>();

        BarEntryLabels = new ArrayList<String>();

        AddValuesToBARENTRY();

        AddValuesToBarEntryLabels();

        Bardataset = new BarDataSet(BARENTRY, "Projects");

        BARDATA = new BarData(BarEntryLabels, Bardataset);

        Bardataset.setColors(ColorTemplate.COLORFUL_COLORS);

        chart.setData(BARDATA);

        chart.animateY(3000);
//        chart.setOnClickListener(new View.OnClickListener() {
//            @Override
//            public void onClick(View view) {
//                PopupMenu popup = new PopupMenu(barchart.this,chart);
//
//                popup.getMenuInflater().inflate(R.menu.popup_menu, popup.getMenu());
//                popup.show();
//
//                popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
//                    public boolean onMenuItemClick(MenuItem item) {
//                        Toast.makeText(barchart.this,"You Clicked : " + item.getTitle(),Toast.LENGTH_SHORT).show();
//                        return true;
//                    }
//                });
//            }
//        });
        chart.setOnChartValueSelectedListener( new OnChartValueSelectedListener() {
            @Override
            public void onValueSelected(Entry e, int dataSetIndex, Highlight h) {

                PopupMenu popup = new PopupMenu(barchart.this,chart);

                popup.getMenuInflater().inflate(R.menu.popup_menu, popup.getMenu());
                popup.show();

                popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                    public boolean onMenuItemClick(MenuItem item) {
                        Toast.makeText(barchart.this,"You Clicked : " + item.getTitle(),Toast.LENGTH_SHORT).show();
                        return true;
                    }
                });

            }

            @Override
            public void onNothingSelected() {

            }
        });


    }

    public void AddValuesToBARENTRY(){

        BARENTRY.add(new BarEntry(2f, 0));
        BARENTRY.add(new BarEntry(4f, 1));
        BARENTRY.add(new BarEntry(6f, 2));
        BARENTRY.add(new BarEntry(8f, 3));
        BARENTRY.add(new BarEntry(7f, 4));
        BARENTRY.add(new BarEntry(3f, 5));

    }

    public void AddValuesToBarEntryLabels(){

        BarEntryLabels.add("January");
        BarEntryLabels.add("February");
        BarEntryLabels.add("March");
        BarEntryLabels.add("April");
        BarEntryLabels.add("May");
        BarEntryLabels.add("June");

    }



}

popup menu.xml

<pre><?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/one"
        android:title="Type-1"/>

    <item
        android:id="@+id/two"
        android:title="Type-2"/>
</menu>

推荐答案

在 PopupMenu 构造函数中，在所需位置指定一个新锚点。

In the PopupMenu constructor, designate a new anchor in the desired position.

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