Shulou(Shulou.com)05/31 Report--

This article mainly introduces "how to achieve onKey operation in Android". In daily operation, I believe many people have doubts about how to achieve onKey operation in Android. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubt of "how to achieve onKey operation in Android"! Next, please follow the editor to study!

A GridView has been added to the Activity subclass Gstock

SetContentView (R.layout.gstock); GridView gridview = (GridView) findViewById (R.id.gridviewMain)

And set the GridView

Gridview.setOnItemClickListener (new GstockGridViewItemClickListener (this))

After clicking to select one, reset the Gstock

SetContentView (new MyStock (this.g))

MyStock extends SurfaceView implements SurfaceHolder.Callback, OnKeyListener at this time

Public MyStock (Context context) {super (context); holder = this.getHolder (); holder.addCallback (this); this.setFocusable (true); this.setOnKeyListener (this); / / listen for onKey events}

Situation that cannot be monitored: when the GridView has focus, that is, when the picture above the simulator has a background.

Can monitor the situation: when the mouse clicks GridView when there is no focus, there is no background after clicking.

At this point, the study on "how to implement onKey operation in Android" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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