转：http://blog.csdn.net/hongjinqun/article/details/30221201
效果图：
源码地址：https://github.com/dmytrodanylyk/circular-progress-button
使用说明：
Usage
Declare button inside your layout XML file:
<com.dd.CircularProgressButton android:id="@+id/btnWithText" android:layout_width="196dp" android:layout_height="64dp" android:layout_marginTop="16dp" android:textColor="@color/white" android:textSize="18sp" app:textComplete="@string/Complete" app:textError="@string/Error" app:textIdle="@string/Upload" />
Button state depends on progress:
- normal state [0]
- progress state [1-99]
- success state [100]
- error state [-1]
To change progress use CircularProgressButton.setProgress(int value) method.
Idle state
CircularProgressButton.setProgress(0)
- To change text
app:textIdle="@string/Upload" - To change background color
app:colorIdle="@color/green"
Progress state 1
CircularProgressButton.setProgress(1) will automatically morph button from idle (square shape) state to progress (circle shape) state.
To change indicator color app:colorIndicator="@color/blue"
To change indicator background color app:colorIndicatorBackground="@color/grey"
To change circle background color app:colorProgress="@color/white"
Progress state 50
CircularProgressButton.setProgress(50)
Complete state 100
CircularProgressButton.setProgress(-1)
- To change text
app:textError="@string/Error" - To change background color
app:colorError="@color/red"
Error state -1
CircularProgressButton.setProgress(-1)
- To change text
app:textComplete="@string/Complete" - To change background color
app:colorComplete="@color/green"
You can set rounded corners
app:cornerRadius="48dp"
You can use icons for complete & error states
app:iconComplete="@drawable/ic_action_accept"
app:iconError="@drawable/ic_action_cancel"