Android Chart 框架 MPAndroidChart 学习笔记1_框架初始化

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点击这里查看项目源码

1.安装

1.1 添加依赖

工程级别的build.gradle中添加:

allprojects {
    repositories {
        maven { url "https://jitpack.io" }
    }
}

app下的build.gradle中添加:

dependencies {
    compile 'com.github.PhilJay:MPAndroidChart:v3.0.1'
}

2.使用

2.1 在XML中加入chart

       <com.github.mikephil.charting.charts.LineChart
            android:id="@+id/chart"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

2.2 在java中初始化

    LineChart chart = (LineChart) findViewById(R.id.chart);
    或者:
    // programmatically create a LineChart
    LineChart chart = new LineChart(Context);

    // get a layout defined in xml
    RelativeLayout rl = (RelativeLayout) findViewById(R.id.relativeLayout);
    rl.add(chart); // add the programmatically created chart

2.3 添加数据

//初始化Entry列表

    List<Entry> entries = new ArrayList<Entry>();

new Entry(x,y) 这里xy就对应xy轴的数值

    //向Entry中加入数据
    for (int i = 0; i < 20; i++) {
            // turn your data into Entry objects
            entries.add(new Entry(i, 2*i));
    }

绑定dataSet

    LineDataSet dataSet = new LineDataSet(entries, "Label"); // add entries to dataset

设置表格UI

    dataSet.setColor(R.color.colorAccent);
    dataSet.setValueTextColor(R.color.colorPrimary); // styling, ...

设置表格形式（lineData line表格）

    LineData lineData = new LineData(dataSet);
    mChart.setData(lineData);

刷新表格

    mChart.invalidate();