From d5654658c80f9d75285ca6290d884ddccefc4d32 Mon Sep 17 00:00:00 2001
From: zeng1990java <zeng1990java@gmail.com>
Date: Tue, 10 Nov 2015 22:45:10 +0800
Subject: [PATCH] add saveInstanceState and restoreInstanceState

---
 .../zeng1990java/widget/WaveProgressView.java | 34 ++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/library/src/main/java/com/github/zeng1990java/widget/WaveProgressView.java b/library/src/main/java/com/github/zeng1990java/widget/WaveProgressView.java
index f077334..1f0487f 100644
--- a/library/src/main/java/com/github/zeng1990java/widget/WaveProgressView.java
+++ b/library/src/main/java/com/github/zeng1990java/widget/WaveProgressView.java
@@ -9,6 +9,8 @@
 import android.graphics.Paint;
 import android.graphics.Path;
 import android.graphics.RectF;
+import android.os.Bundle;
+import android.os.Parcelable;
 import android.util.AttributeSet;
 import android.util.TypedValue;
 import android.view.View;
@@ -22,6 +24,13 @@
  */
 public class WaveProgressView extends View {
 
+    private static final String STATE_INSTANCE = "state_instance";
+    private static final String STATE_MAX = "state_max";
+    private static final String STATE_PROGRESS = "state_progress";
+    private static final String STATE_WAVE_COLOR = "state_wave_color";
+
+    private static final int DEFAULT_COLOR = Color.parseColor("#1abc9c");
+
     private Paint mPaint;
     private Paint mBorderPaint;
     private RectF mBorderRectF;
@@ -43,7 +52,7 @@ public class WaveProgressView extends View {
     private int mMax = 100;
     private int mProgress = 0;
 
-    private int mWaveColor = Color.parseColor("#1abc9c");
+    private int mWaveColor = DEFAULT_COLOR;
 
     private ObjectAnimator mAngleAnim;
 
@@ -235,6 +244,29 @@ public void setAngle(int angle){
         invalidate();
     }
 
+    @Override
+    protected Parcelable onSaveInstanceState() {
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(STATE_INSTANCE, super.onSaveInstanceState());
+        bundle.putInt(STATE_MAX, mMax);
+        bundle.putInt(STATE_PROGRESS, mProgress);
+        bundle.putInt(STATE_WAVE_COLOR, mWaveColor);
+        return bundle;
+    }
+
+    @Override
+    protected void onRestoreInstanceState(Parcelable state) {
+        if (state instanceof Bundle){
+            Bundle bundle = (Bundle) state;
+            mMax = bundle.getInt(STATE_MAX, 100);
+            mProgress = bundle.getInt(STATE_PROGRESS, 0);
+            mWaveColor = bundle.getInt(STATE_WAVE_COLOR, DEFAULT_COLOR);
+            super.onRestoreInstanceState(bundle.getParcelable(STATE_INSTANCE));
+            return ;
+        }
+        super.onRestoreInstanceState(state);
+    }
+
     private static double clamp(double value, double max, double min) {
         return Math.max(Math.min(value, min), max);
     }