Android图表库MPAndroidChart——散点图的孪生兄弟气泡图 _气泡图

会挽雕弓如满月，西北望，射天狼。这篇文章主要讲述Android图表库MPAndroidChart——散点图的孪生兄弟气泡图相关的知识，希望能为你提供帮助。
android图表库MPAndroidChart(十)——散点图的孪生兄弟气泡图

起泡图和散点图如出一辙，但是个人认为要比散点图好看一点，我们来看下实际的演示效果

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这个和散点图的实现很相似，我们一起来看下

一.基本实现

先看下我的xml

< com.github.mikephil.charting.charts.BubbleChart android:id= " @ + id/mBubbleChart" android:layout_width= " match_parent" android:layout_height= " 0dp" android:layout_weight= " 1" />

用的是BubbleChart这个View，再来初始化下

//起泡图 mBubbleChart = (BubbleChart) findViewById(R.id.mBubbleChart); mBubbleChart.getDescription().setEnabled(false); mBubbleChart.setOnChartValueSelectedListener(this); mBubbleChart.setDrawGridBackground(false); mBubbleChart.setTouchEnabled(true); mBubbleChart.setDragEnabled(true); mBubbleChart.setScaleEnabled(true); mBubbleChart.setMaxVisibleValueCount(200); mBubbleChart.setPinchZoom(true); Legend l = mBubbleChart.getLegend(); l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP); l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT); l.setOrientation(Legend.LegendOrientation.VERTICAL); l.setDrawInside(false); YAxis yl = mBubbleChart.getAxisLeft(); yl.setSpaceTop(30f); yl.setSpaceBottom(30f); yl.setDrawZeroLine(false); mBubbleChart.getAxisRight().setEnabled(false); XAxis xl = mBubbleChart.getXAxis(); xl.setPosition(XAxis.XAxisPosition.BOTTOM); setData();

很简单，设置一些假数据

//设置数据 private void setData() {ArrayList< BubbleEntry> yVals1 = new ArrayList< BubbleEntry> (); ArrayList< BubbleEntry> yVals2 = new ArrayList< BubbleEntry> (); ArrayList< BubbleEntry> yVals3 = new ArrayList< BubbleEntry> (); for (int i = 0; i < 10; i+ + ) { float val = (float) (Math.random() * 30); float size = (float) (Math.random() * 40); yVals1.add(new BubbleEntry(i, val, size)); }for (int i = 0; i < 20; i+ + ) { float val = (float) (Math.random() * 40); float size = (float) (Math.random() * 50); yVals2.add(new BubbleEntry(i, val, size)); }for (int i = 0; i < 30; i+ + ) { float val = (float) (Math.random() * 50); float size = (float) (Math.random() * 60); yVals3.add(new BubbleEntry(i, val, size)); }BubbleDataSet set1 = new BubbleDataSet(yVals1, " 优秀" ); //可以谁知alpha set1.setColor(ColorTemplate.COLORFUL_COLORS[0]); set1.setDrawValues(true); BubbleDataSet set2 = new BubbleDataSet(yVals2, " 及格" ); set2.setColor(ColorTemplate.COLORFUL_COLORS[1]); set2.setDrawValues(true); BubbleDataSet set3 = new BubbleDataSet(yVals3, " 不及格" ); set3.setColor(ColorTemplate.COLORFUL_COLORS[2]); set3.setDrawValues(true); ArrayList< IBubbleDataSet> dataSets = new ArrayList< IBubbleDataSet> (); dataSets.add(set1); dataSets.add(set2); dataSets.add(set3); BubbleData data = new BubbleData(dataSets); data.setDrawValues(false); data.setValueTextSize(8f); data.setValueTextColor(Color.WHITE); data.setHighlightCircleWidth(1.5f); mBubbleChart.setData(data); mBubbleChart.invalidate(); //默认动画 mBubbleChart.animateXY(3000, 3000); }

这样就大功告成了，和之前的散点图一样了

二.显示顶点

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三.X轴动画

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四.Y轴动画

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五.XY轴动画 【Android图表库MPAndroidChart——散点图的孪生兄弟气泡图】

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嘻嘻，很简单对不对，那我们现在来看下全部的代码

activity_bubble.xml

< ?xml version= " 1.0" encoding= " utf-8" ?> < LinearLayout xmlns:android= " http://schemas.android.com/apk/res/android" android:layout_width= " match_parent" android:layout_height= " match_parent" android:orientation= " vertical" > < com.github.mikephil.charting.charts.BubbleChart android:id= " @ + id/mBubbleChart" android:layout_width= " match_parent" android:layout_height= " 0dp" android:layout_weight= " 1" /> < LinearLayout android:layout_width= " match_parent" android:layout_height= " wrap_content" android:orientation= " horizontal" > < Button android:id= " @ + id/btn_show_values" android:layout_width= " wrap_content" android:layout_height= " wrap_content" android:text= " 顶点显示值" /> < Button android:id= " @ + id/btn_anim_x" android:layout_width= " wrap_content" android:layout_height= " wrap_content" android:text= " X轴动画" /> < Button android:id= " @ + id/btn_anim_y" android:layout_width= " wrap_content" android:layout_height= " wrap_content" android:text= " Y轴动画" /> < Button android:id= " @ + id/btn_anim_xy" android:layout_width= " wrap_content" android:layout_height= " wrap_content" android:text= " XY轴动画" /> < /LinearLayout> < LinearLayout android:layout_width= " match_parent" android:layout_height= " wrap_content" android:orientation= " horizontal" > < Button android:id= " @ + id/btn_save_pic" android:layout_width= " wrap_content" android:layout_height= " wrap_content" android:text= " 保存到相册" /> < Button android:id= " @ + id/btn_auto_mix_max" android:layout_width= " wrap_content" android:layout_height= " wrap_content" android:text= " 自动最大最小值" /> < Button android:id= " @ + id/btn_actionToggleHighlight" android:layout_width= " wrap_content" android:layout_height= " wrap_content" android:text= " 高亮显示" /> < /LinearLayout> < /LinearLayout>

BubbleChartActivity

public class BubbleChartActivity extends BaseActivity implements OnChartValueSelectedListener, View.OnClickListener {private BubbleChart mBubbleChart; //显示顶点值 private Button btn_show_values; //x轴动画 private Button btn_anim_x; //y轴动画 private Button btn_anim_y; //xy轴动画 private Button btn_anim_xy; //保存到sd卡 private Button btn_save_pic; //切换自动最大最小值 private Button btn_auto_mix_max; //高亮显示 private Button btn_actionToggleHighlight; @ Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_bubble); initView(); }//初始化View private void initView() {//基本控件 btn_show_values = (Button) findViewById(R.id.btn_show_values); btn_show_values.setOnClickListener(this); btn_anim_x = (Button) findViewById(R.id.btn_anim_x); btn_anim_x.setOnClickListener(this); btn_anim_y = (Button) findViewById(R.id.btn_anim_y); btn_anim_y.setOnClickListener(this); btn_anim_xy = (Button) findViewById(R.id.btn_anim_xy); btn_anim_xy.setOnClickListener(this); btn_save_pic = (Button) findViewById(R.id.btn_save_pic); btn_save_pic.setOnClickListener(this); btn_auto_mix_max = (Button) findViewById(R.id.btn_auto_mix_max); btn_auto_mix_max.setOnClickListener(this); btn_actionToggleHighlight = (Button) findViewById(R.id.btn_actionToggleHighlight); btn_actionToggleHighlight.setOnClickListener(this); //起泡图 mBubbleChart = (BubbleChart) findViewById(R.id.mBubbleChart); mBubbleChart.getDescription().setEnabled(false); mBubbleChart.setOnChartValueSelectedListener(this); mBubbleChart.setDrawGridBackground(false); mBubbleChart.setTouchEnabled(true); mBubbleChart.setDragEnabled(true); mBubbleChart.setScaleEnabled(true); mBubbleChart.setMaxVisibleValueCount(200); mBubbleChart.setPinchZoom(true); Legend l = mBubbleChart.getLegend(); l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP); l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT); l.setOrientation(Legend.LegendOrientation.VERTICAL); l.setDrawInside(false); YAxis yl = mBubbleChart.getAxisLeft(); yl.setSpaceTop(30f); yl.setSpaceBottom(30f); yl.setDrawZeroLine(false); mBubbleChart.getAxisRight().setEnabled(false); XAxis xl = mBubbleChart.getXAxis(); xl.setPosition(XAxis.XAxisPosition.BOTTOM); setData(); }//设置数据 private void setData() {ArrayList< BubbleEntry> yVals1 = new ArrayList< BubbleEntry> (); ArrayList< BubbleEntry> yVals2 = new ArrayList< BubbleEntry> (); ArrayList< BubbleEntry> yVals3 = new ArrayList< BubbleEntry> (); for (int i = 0; i < 10; i+ + ) { float val = (float) (Math.random() * 30); float size = (float) (Math.random() * 40); yVals1.add(new BubbleEntry(i, val, size)); }for (int i = 0; i < 20; i+ + ) { float val = (float) (Math.random() * 40); float size = (float) (Math.random() * 50); yVals2.add(new BubbleEntry(i, val, size)); }for (int i = 0; i < 30; i+ + ) { float val = (float) (Math.random() * 50); float size = (float) (Math.random() * 60); yVals3.add(new BubbleEntry(i, val, size)); }BubbleDataSet set1 = new BubbleDataSet(yVals1, " 优秀" ); //可以谁知alpha set1.setColor(ColorTemplate.COLORFUL_COLORS[0]); set1.setDrawValues(true); BubbleDataSet set2 = new BubbleDataSet(yVals2, " 及格" ); set2.setColor(ColorTemplate.COLORFUL_COLORS[1]); set2.setDrawValues(true); BubbleDataSet set3 = new BubbleDataSet(yVals3, " 不及格" ); set3.setColor(ColorTemplate.COLORFUL_COLORS[2]); set3.setDrawValues(true); ArrayList< IBubbleDataSet> dataSets = new ArrayList< IBubbleDataSet> (); dataSets.add(set1); dataSets.add(set2); dataSets.add(set3); BubbleData data = new BubbleData(dataSets); data.setDrawValues(false); data.setValueTextSize(8f); data.setValueTextColor(Color.WHITE); data.setHighlightCircleWidth(1.5f); mBubbleChart.setData(data); mBubbleChart.invalidate(); //默认动画 mBubbleChart.animateXY(3000, 3000); }@ Override public void onValueSelected(Entry e, Highlight h) {}@ Override public void onNothingSelected() {}@ Override public void onClick(View v) { switch (v.getId()) { //显示顶点值 case R.id.btn_show_values: for (IDataSet set : mBubbleChart.getData().getDataSets()) set.setDrawValues(!set.isDrawValuesEnabled()); mBubbleChart.invalidate(); break; //x轴动画 case R.id.btn_anim_x: mBubbleChart.animateX(3000); break; //y轴动画 case R.id.btn_anim_y: mBubbleChart.animateY(3000); break; //xy轴动画 case R.id.btn_anim_xy: mBubbleChart.animateXY(3000, 3000); break; //保存到sd卡 case R.id.btn_save_pic: if (mBubbleChart.saveToGallery(" title" + System.currentTimeMillis(), 50)) { Toast.makeText(getApplicationContext(), " 保存成功" , Toast.LENGTH_SHORT).show(); } else Toast.makeText(getApplicationContext(), " 保存失败" , Toast.LENGTH_SHORT).show(); break; //切换自动最大最小值 case R.id.btn_auto_mix_max: mBubbleChart.setAutoScaleMinMaxEnabled(!mBubbleChart.isAutoScaleMinMaxEnabled()); mBubbleChart.notifyDataSetChanged(); break; //高亮显示 case R.id.btn_actionToggleHighlight: if (mBubbleChart.getData() != null) { mBubbleChart.getData().setHighlightEnabled( !mBubbleChart.getData().isHighlightEnabled()); mBubbleChart.invalidate(); } break; } } }