Preface

1. background ： In use AChartEngine Carry out drawing combination bottomSheetBehavior Drawing ;

problem

In the use of bottomSheetBehavior Jam occurs when displaying the view ,

To analyze problems

AChartEngineView Too many views have been added ？？

1. In use , At the time of initialization View Draw a standard line in , Then dynamically add and replace different lines ; Maybe it's the repeated replacement of data that causes the attempt to jam ？
2. test ： Cancels the repeated replacement of data , When initializing data, three pieces of data are drawn in the background ;
3. result ： There's a lot of data , But there is no Caton phenomenon ？

Reading data from text too long ？

1. I have a lot of data , from 150K Of txt Get in file Tens of thousands double data ;
2. test ： Record before and after drawing （ Including parsing data ） Time for , Calculate the time taken to draw the picture ：
3. result ： Within one second , in fact , Very fast ！

Caton appears when the drawing is displayed ？

1. The drawing line has been drawn , But when it is displayed, there is always Caton , Even after repeatedly replacing the view, it flashed back ;
2. test ; Let the thread sleep before displaying the view , Let the view be fully loaded and displayed at the end ;
3. result ： meaningless , in fact , This coincides with the previous one , The drawing method is very fast , But still stuck .

The ultimate solution

1. Search on the Internet Android UI Causes and solutions of Caton when , be aware ,Android Every 16ms Will draw once Activity; And I use... In threads AChartEngine After drawing , It was carried out manually postInvalidate() Method to force redrawing ;
2. in fact , Forced redrawing will result in a jam every time ;
3. It's the same with AChartEngine It has something to do with the use of .

The first one is about UI Optimized articles ！ come on. ！ Origie ！