修复签名初始化失败的问题

ApexDrivers/RAUtilsLibrary/src/main/java/com/usai/redant/rautils/signature/SignatureView.java

@@ -63,22 +63,22 @@ public class SignatureView extends View {
     int idx_lastaction = 0;
     public SignatureView(Context context) {
         super(context);
-        init(context);
+//        init(context);
     }
 
     public SignatureView(Context context, @Nullable AttributeSet attrs) {
         super(context, attrs);
-        init(context);
+//        init(context);
     }
 
     public SignatureView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
-        init(context);
+//        init(context);
     }
 
     public SignatureView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
         super(context, attrs, defStyleAttr, defStyleRes);
-        init(context);
+//        init(context);
     }
     @Override
     protected void finalize() throws Throwable
@@ -93,17 +93,18 @@ public class SignatureView extends View {
     void init(final Context context)
     {
 
-        post(new Runnable() {
-
-            @Override
-            public void run() {
+//        Log.d("viewpost", "post ");
+//        post(new Runnable() {
+//
+//            @Override
+//            public void run() {
                 Log.d("viewpost", "run: ");
 //                mVelocityTracker = VelocityTracker.obtain();
                 initPaint();
                 initCanvas( context);
                 Log.d("viewpost", "init done ");
-            }
-        });
+//            }
+//        });
 
     }
 
@@ -136,7 +137,9 @@ public class SignatureView extends View {
                 View.MeasureSpec.UNSPECIFIED);
         measure(width, height);
 
+//        Log.d("signature mBitmap", "initCanvas: "+width+" , "+height);
         mBitmap = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
+        Log.d("signature mBitmap", "initCanvas: "+getWidth()+" , "+getHeight());
         mbmpCanvas = new Canvas(mBitmap);
         //设置画布的颜色的问题
         mbmpCanvas.drawColor(Color.TRANSPARENT);
@@ -375,6 +378,11 @@ public class SignatureView extends View {
     @Override
     protected void onDraw(Canvas canvas) {
 
+        if(mPaint==null)
+        {
+
+            init(getContext());
+        }
         if (canvas == null) {
             super.onDraw(canvas);
             return;