如何更改 android 中按钮的背景并在几秒钟后保留它
How to change background of a button in android and retain it after few seconds
我提到了这个 -->
我试过上面的解决方案,但它不起作用 --> 有几秒钟没有显示该可绘制对象
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)
}
})
连吐司都无法点击
我错过了什么?
这对我来说很好,你需要将视图设置为最终视图,这样你就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);
}
});
我提到了这个 -->
我试过上面的解决方案,但它不起作用 --> 有几秒钟没有显示该可绘制对象
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)
}
})
连吐司都无法点击
我错过了什么?
这对我来说很好,你需要将视图设置为最终视图,这样你就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);
}
});