Android Custom ProgressBar not Rotating

问题:

I want to change the default animation of a ProgressBar, so I added a custom style in my theme:

styles.xml

<style name="ProgressTheme" parent="@android:style/Widget.ProgressBar.Large">
    <item name="android:indeterminateDrawable">@drawable/spinner_holo_light</item>
</style>

I am calling this style inside my ProgressBar with the following:

ProgressBar.xml

<ProgressBar
    android:id="@+id/loadingProgressBar"
    style="@style/ProgressTheme"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

The problem lies inside the spinner_holo_light.xml:

If I use the following, everything works fine on devices with os 3.0+, but the progress does not rotate on older os versions:

spinner_holo_light.xml

<rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/spinner_76_inner_holo"
    android:fromDegrees="720"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="0" />

But if I use animate-rotate instead, the animation works on every os version, but the result is a very laggy animation.

<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/spinner_76_inner_holo"
    android:fromDegrees="720"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="0" />

What do you think about it? Am I doing something wrong here?

回答1:

On older devices it is a problem when android:fromDegrees is bigger than android:toDegress in <rotate>. Try swapping the values:

<rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/spinner_76_inner_holo"
    android:fromDegrees="0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="720" />

Alternatively, you can try setting it as infinite:

<rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/spinner_76_inner_holo"
    android:pivotX="50%"
    android:pivotY="50%"
    android:repeatCount="infinite" />

The animation might be laggy on older devices. To fix this add android:animationResolution to the style:

<style name="ProgressTheme" parent="@android:style/Widget.ProgressBar.Large">
    <item name="android:indeterminateDrawable">@drawable/spinner_holo_light</item>
    <item name="android:animationResolution">33</item>
</style>

回答2:

Make transparent background of progress dialog.

Make border less progress dialog.

And customization of color of spinner of circular progress dialog.

http://pankajchunchun.wordpress.com/2011/09/10/customization-of-spinner-progress/

回答3:

I couldn't get it work on Samsung Galaxy S Plus even adding

<item name="android:animationResolution">33</item>

I was asking something similar to your response @Tomik

Android Progress Bar slow rotation on pre HoneyComb devices

Is it smoothly on all the pre honeycomb devices for sure?

回答4:

I Solved this Problem by Changing BackGround xml Custom format to indeterminateDrawable

Use android:indeterminateDrawable except android:BackGround

    <ProgressBar
    android:layout_centerHorizontal = "true"
    android:layout_centerVertical = "true"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:indeterminateDrawable = "@drawable/progressbar"
    android:id="@+id/progressBar"        
    android:indeterminate = "true"/>

And Custom Progressbar XML Code

<?xml version="1.0" encoding="utf-8" ?>

 <rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromDegrees="0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="360">

     <shape android:shape="ring" android:innerRadiusRatio="3"
        android:thicknessRatio="7" android:useLevel="false">

        <size android:width="76dip" android:height="76dip" />
           <gradient android:type="sweep" android:useLevel="false"
            android:startColor="@android:color/transparent"
            android:endColor="#00FF00"
            android:angle="0" />
    </shape>
</rotate>