fix issues Attempt to use a destroyed view: detectChanges in renderValue

[perjerz]

I have an error of detectChanges in renderValue function, to solve this problem just check view is destroyed before call detectChanges function.

[coveralls]

Coverage increased (+0.006%) to 96.259% when pulling eae7580 on perjerz3434:master into 0b8f559 on mseemann:master.

[mseemann]

hi. thx for your contribution.

the solution for your problem may solve your problem but i think it isn't a general solution. The question is: why is the renderValue method is called after the component is destroyed.

I would suggest do the following:

• write a test that reproduces the error
• find the reason why the renderValue method is called after the component is destroyed
• fix this problem - e.g. make the test pass

Let me know if you need any help.

[perjerz]

When mdl-select is used with *ngIf, it is possible to cd.detectChanges() with componet has already destroyed which produce a bug.