Android Graphics Making Line/Bar Graphs

I need to create a graph for a page of an android app i am creating. I have looked everywhere on line, but i can't find a good tutorial for graphics and graphing? And i also don't want to use somebody else's code.

What methods am i supposed to use inorder to create a proper layout for lets say a line graph?

Can anybody recommend a tut开发者_高级运维orial for making a graph that is actually usefull?

Thank You in Advance

You can use the library chartdroid without having to worry about any copyright mess.

Otherwise go here for a tutorial that might help you write your own.

I implemented graphs a while back using the jQuery based JavaScript library flot to draw graphs on android in a webview. Graphs can be drawn using HTML and JavaScript files stored locally, or from the internet. You'll find some useful information to get you started here but i dont know of any tutorials, i think writing your own code from scratch to display graphs would be alot of work, i think you should consider using existing libraries!