如何在Android上移动图形或图表? [英] How to have a Moving graph or chart in android?
本文介绍了如何在Android上移动图形或图表?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我是新来的Android和我需要知道如何使图形或图表(如折线图)移动即,由右至左。
I am new to android and I need to know how to make a graph or chart (eg. line chart) move i.e, from right to left.
基本上我要绘制按照手机的RAM内存使用情况的图表。我需要绘制图形类似present在Windows的任务管理器。
Basically I am going to draw the graph in accordance with the RAM Memory Usage of the phone. I need to draw a graph similarly present in Task Manager of Windows.
请在这方面的帮助。
推荐答案
这是我的样本code。
It's My Sample Code.
我还没有测试。
但我认为这code正常工作。
But I think This code works fine.
public class DrawGraph extends Activity{
/**
* Variable Array for GraphView
* verlabel : Background Height Values
* horlabel : Background Width Values
* values : Max Values of Foreground Active Graph
*/
private float[] values = new float[60];
private String[] verlabels = new String[] { "600","500","400","300","200","100","80","60","40","20","0", };
private String[] horlabels = new String[] { "0","10", "20", "30", "40", "50", "60"};
private GraphView graphView;
private LinearLayout graph;
private boolean runnable = false;
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
graph = (LinearLayout)findViewById(R.id.graph);
graphView = new GraphView(DrawGraph.this, values, "TEST GRAPH", horlabels, verlabels, GraphView.LINE);
graph.addView(graphView);
runnable = true;
startDraw.start();
}
@Override
public void onDestroy(){
super.onDestroy();
runnable = false;
}
public void setGraph(int data){
for(int i=0; i<values.length-1; i++){
values[i] = values[i+1];
}
values[values.length-1] = (float)data;
graph.removeView(graphView);
graph.addView(graphView);
}
public Handler handler = new Handler(){
@Override
public void handleMessage(android.os.Message msg){
switch(msg.what){
case 0x01:
int testValue = (int)(Math.random() * 600)+1;
setGraph(testValue);
break;
}
}
}
public Thread startDraw = new Thread(){
@Override
public void run(){
while(runnable){
handler.sendEmptyMessage(0x01);
try{
Thread.sleep(1000);
} catch (Exception e){
e.printstacktrace();
}
}
}
}
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