如何提高android中的旋转速度？
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How to increase the rotation speed in android?
提问by Praveen
I have an image drawable. i rotating the image like a progress bar.
我有一个可绘制的图像。我像进度条一样旋转图像。
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:pivotX="50%" android:pivotY="50%" android:fromDegrees="0"
android:toDegrees="360" android:drawable="@drawable/spinner_white_48" />
i want to increase the rotation speed? for that, What attribute i have to use?
我想提高转速？为此，我必须使用什么属性？
采纳答案by Robby Pond
Set the durationand repeatCountthat you want the animation to run.
回答by DustinB
Setting duration and/or repeat count did not help me with an indeterminate ProgressBar animation. I had to increase the toDegrees to have it make additional loops:
设置持续时间和/或重复计数对不确定的 ProgressBar 动画没有帮助。我不得不增加 toDegrees 让它产生额外的循环：
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/ic_indeterminate_progress"
android:duration="1"
android:fromDegrees="0"
android:pivotX="50%"
android:pivotY="50%"
android:toDegrees="1080" /> <!--1080 is 3 loops instead of 1 in same amt of time-->
回答by android developer
According to this link:
根据此链接：
The rotation speed of the indeterminate progress bar is fixed at one revolution every 4 seconds, changing the duration attribute in the drawable XML has no effect. If you prefer to speed it up, you can change the toDegrees attribute to multiples of 360:
- 720 makes one turn in 2 seconds
- 1080 makes one turn in 1.33 seconds
- 1440 makes one turn in 1 second
不确定进度条的旋转速度固定为每 4 秒旋转一圈，更改 drawable XML 中的持续时间属性无效。如果您希望加快速度，可以将 toDegrees 属性更改为 360 的倍数：
- 720 2秒转一圈
- 1080转一圈1.33秒
- 1440一秒转一圈
In addition, you can just use indeterminateDuration for the ProgressBar.
此外，您可以只对 ProgressBar 使用 indeterminateDuration。
回答by Mr_Moradi
add in code to progress.xml
将代码添加到progress.xml
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:pivotX="50%"
android:pivotY="50%"
android:fromDegrees="0"
android:toDegrees="1080" /> <!--1080 is 3 loops instead of 1 in same amt of time-->
回答by Primal Pappachan
android:duration="required value in ms"
