[英]How to change background of a button in android and retain it after few seconds
我提到了这个 --> https://stackoverflow.com/a/31367723/12553303
我尝试了上述解决方案,但它不起作用 --> 几秒钟内未显示可绘制对象
这是我的代码:
buynow.setOnClickListener(object : View.OnClickListener{
override fun onClick(v: View?) {
// set the color red first.
buynow.setBackgroundResource(R.drawable.mybuttonred)
// change to original after 5 secs.
Handler().postDelayed(Runnable { buynow.setBackgroundResource(R.drawable.mybutton)
Toast.makeText(applicationContext,"ksjdf",Toast.LENGTH_LONG).show()
},
5000)
}
})
甚至吐司在点击时也不起作用
我错过了什么?
这对我来说很好用,您需要使视图最终化,以便您可以在处理程序主体中访问它
buyNow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(final View view) {
view.setBackgroundColor(Color.RED); //set the color to red
// Delay of 2 seconds (200 ms) before changing back the color to black
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
view.setBackgroundColor(Color.BLACK); //set the color to black
}
}, 200);
}
});
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