问题描述
我想为 TextView
的 leftDrawable
制作动画,我尝试了以下操作:
I would like to animate leftDrawable
of a TextView
, I tried the following:
ObjectAnimator.ofFloat(drawable, "rotation", 0f, 360f).setDuration(300).start();
button.setCompoundDrawablesWithIntrinsicBounds(drawable, null, null, null);
但这似乎没有动画效果,过去我使用过 AnimationDrawable
,它可以通过将几个可绘制对象放入< animation-list>
来工作,但是apk大小是一个问题,因此我尝试避免拥有多个资产来实现这一目标。
But it doesn't seem to animate, in the past I've used AnimationDrawable
and it works by putting several drawables in a <animation-list>
, but apk size is a concern so I'm trying to avoid having multiple assets to achieve this.
请告知我是否做错了什么,或者使用 ObjectAnimator无法实现此目的
。
Please let me know if I've done something wrong or this is not achievable using ObjectAnimator
.
谢谢。
推荐答案
请尝试以下操作:
TextView tv = new TextView(this);
Drawable left = getResources().getDrawable(R.drawable.rotate);
tv.setCompoundDrawablesWithIntrinsicBounds(left, null, null, null);
final ObjectAnimator animator = ObjectAnimator.ofInt(left, "level", 0, 10000).setDuration(1000);
View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d(TAG, "onClick ");
animator.start();
}
};
tv.setOnClickListener(listener);
tv.setGravity(Gravity.CENTER);
tv.setTextSize(48);
tv.setText("click me");
setContentView(tv);
res / drawable / rotate.xml看起来像这样:
res/drawable/rotate.xml looks like this:
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="0" android:toDegrees="720">
<bitmap android:src="@drawable/ic_launcher"/>
</rotate>
这篇关于使用ObjectAnimator动画TextView的leftDrawable的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!