有什么办法,在代码中,使按钮不断闪烁,然后在按下时停止闪烁?
问问题
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2 回答
124
有几种,取决于您的意思是哪种闪烁。例如,您可以使用 alpha 动画并在按钮首次出现时启动它。而当用户单击按钮时,您OnClickListener
只需执行clearAnimation()
.
例子:
public void onCreate(Bundle savedInstanceState) {
final Animation animation = new AlphaAnimation(1, 0); // Change alpha from fully visible to invisible
animation.setDuration(500); // duration - half a second
animation.setInterpolator(new LinearInterpolator()); // do not alter animation rate
animation.setRepeatCount(Animation.INFINITE); // Repeat animation infinitely
animation.setRepeatMode(Animation.REVERSE); // Reverse animation at the end so the button will fade back in
final Button btn = (Button) findViewById(R.id.your_btn);
btn.startAnimation(animation);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(final View view) {
view.clearAnimation();
}
});
}
于 2011-01-31T15:11:47.763 回答
12
您可以使用此代码,也可以通过 mAnimation.setDuration(200); 决定按钮的闪烁时间;.代码如下。
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
select=(Button)findViewById(R.id.bSelect);
Animation mAnimation = new AlphaAnimation(1, 0);
mAnimation.setDuration(200);
mAnimation.setInterpolator(new LinearInterpolator());
mAnimation.setRepeatCount(Animation.INFINITE);
mAnimation.setRepeatMode(Animation.REVERSE);
select.startAnimation(mAnimation);
select.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
v.clearAnimation();
}
});
}
于 2012-12-10T05:20:34.130 回答