MPAndroid组条形图未显示 [英] MPAndroid Group bar chart is not showing

问题描述

这是我用于使用MPAndroid库版本3的bar_chart组的代码.我尝试使用较低版本的组条形图，它工作正常，但BarData构造函数已更改为最新版本.而且此代码不起作用.没有崩溃和错误日志，仍然在加载图形，并且没有数据显示.帮我找出毛病

Here is the code i used for group bar_chart using MPAndroid library version 3. I've tried group bar chart in lower version and it works fine but the BarData constructor is changed in latest version. And this code doesn't works. There is no crashes and error logs, still graph is loading and no data shows in it. Help me to find ma flaws

        List<BarEntry> entriesGroup1 = new ArrayList<>();
        List<BarEntry> entriesGroup2 = new ArrayList<>();
        List<BarEntry> entriesGroup3 = new ArrayList<>();

        entriesGroup1.add(new BarEntry(0, 8f));
        entriesGroup1.add(new BarEntry(1, 2f));
        entriesGroup1.add(new BarEntry(2, 5f));
        entriesGroup1.add(new BarEntry(3, 20f));
        entriesGroup1.add(new BarEntry(4, 15f));
        entriesGroup1.add(new BarEntry(5, 19f));

        entriesGroup2.add(new BarEntry(0, 6f));
        entriesGroup2.add(new BarEntry(1, 10f));
        entriesGroup2.add(new BarEntry(2, 5f));
        entriesGroup2.add(new BarEntry(3, 25f));
        entriesGroup2.add(new BarEntry(4, 4f));
        entriesGroup2.add(new BarEntry(5, 17f));

        entriesGroup3.add(new BarEntry(0, 9f));
        entriesGroup3.add(new BarEntry(1, 1f));
        entriesGroup3.add(new BarEntry(2, 15f));
        entriesGroup3.add(new BarEntry(3, 13f));
        entriesGroup3.add(new BarEntry(4, 40f));
        entriesGroup3.add(new BarEntry(5, 25f));

        BarDataSet set1 = new BarDataSet(entriesGroup1, "Group 1");
        BarDataSet set2 = new BarDataSet(entriesGroup2, "Group 2");
        BarDataSet set3 = new BarDataSet(entriesGroup3, "Group 3");

        final ArrayList<String> labels = new ArrayList<String>();
        labels.add("2016");
        labels.add("2015");
        labels.add("2014");
        labels.add("2013");
        labels.add("2012");
        labels.add("2011");
        IAxisValueFormatter formatter = new IAxisValueFormatter() {

            @Override
            public String getFormattedValue(float value, AxisBase axis) {

                if((int) value < 0 || (int) value >= labels.size()){
                    return "";
                }else{
                    return labels.get((int) value);
                }
            }

            // we don't draw numbers, so no decimal digits needed
            @Override
            public int getDecimalDigits() {  return 0; }
        };

        set1.setColor(Color.parseColor("#cd5080"));
        set2.setColor(Color.parseColor("#0d5080"));
        set3.setColor(Color.parseColor("#fc5080"));;

        float groupSpace = 0.06f;
        float barSpace = 0.02f; // x2 dataset
        float barWidth = 0.45f; // x2 dataset
// (0.02 + 0.45) * 2 + 0.06 = 1.00 -> interval per "group"

        XAxis xAxis = barChart.getXAxis();
        xAxis.setCenterAxisLabels(true);
        xAxis.setGranularity(1f); // minimum axis-step (interval) is 1
        xAxis.setValueFormatter(formatter);

        BarData data = new BarData(set1, set2, set3);
        data.setBarWidth(barWidth); // set the width of each bar
        barChart.setData(data);
        barChart.groupBars(2016, groupSpace, barSpace); 
        barChart.invalidate(); // refresh

        barChart.animateY(5000);

Nb:因为我被禁止提出新问题，所以我已经编辑了当前问题.但这对我很重要.谢谢大家.

推荐答案

使用打击代码:

    public boolean isActivityRunning(Context context) {
   boolean isActivityFound = false;
    ActivityManager activityManager = (ActivityManager)context.getSystemService (Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> activitys = activityManager.getRunningTasks(Integer.MAX_VALUE);

    for (int i = 0; i < activitys.size(); i++) {
        if (activitys.get(i).topActivity.toString().equalsIgnoreCase("ComponentInfo{com.example.testapp/com.example.testapp.Your_Activity_Name}")) {
            isActivityFound = true;
        }
    }
    return isActivityFound;
}

此处com.example.testapp是您的软件包名称

here com.example.testapp is your package name

需要将权限添加到您的清单.

need to add the permission to your manifest..

<uses-permission  android:name="android.permission.GET_TASKS"/>

它通过使用名称返回正在运行或未运行的活动，并根据需要进行更改.

it returns u activity running or not by using name on it and also change as your requirement .

更新

public static ArrayList<ActivityInfo> getAllRunningActivities(Context context) {
try {
    PackageInfo pi = context.getPackageManager().getPackageInfo(
            context.getPackageName(), PackageManager.GET_ACTIVITIES);

    return new ArrayList<>(Arrays.asList(pi.activities));

} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
    return null;
}
}

此方法为您提供项目中所有正在运行的活动的列表

This method give u list of all running activitys in your project

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