Summary: add onMeasure process

hailang.jiang · hailang.jiang · commit 8ac00dc2b66c · 2017-06-20T10:28:43.000+08:00
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
diff --git a/app/src/main/java/rich/ivan/monthbill/MonthBillView.java b/app/src/main/java/rich/ivan/monthbill/MonthBillView.java
@@ -8,6 +8,7 @@
 import android.graphics.Path;
 import android.support.annotation.Nullable;
 import android.util.AttributeSet;
+import android.util.Log;
 import android.view.View;
 
 /**
@@ -16,6 +17,7 @@
  */
 
 public class MonthBillView extends View {
+    private static final String TAG = "MonthBillView";
 
     private int[] mMonthArray;
     private double[] mBillValues;
@@ -141,6 +143,28 @@ protected void onSizeChanged(int w, int h, int oldw, int oldh) {
         mBillRange = (mBillRange == 0 ? 1 : mBillRange);
     }
 
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        int widthMode = MeasureSpec.getMode(widthMeasureSpec);
+        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
+
+        int heightMode = MeasureSpec.getMode(heightMeasureSpec);
+        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
+
+        Paint.FontMetrics fontMetrics = mTextPaint.getFontMetrics();
+        float fontHeight = fontMetrics.descent - fontMetrics.ascent;
+
+        mWidth = widthSize;
+
+        if (heightMode == MeasureSpec.EXACTLY) {
+            mHeight = heightSize;
+        } else {
+            mHeight = (int) (4 * fontHeight + 4 * fontHeight + getPaddingTop() + getPaddingBottom());
+        }
+
+        setMeasuredDimension(mWidth, mHeight);
+    }
+
     @Override
     protected void onDraw(Canvas canvas) {
         super.onDraw(canvas);
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
@@ -10,7 +10,7 @@
     <rich.ivan.monthbill.MonthBillView
         android:id="@+id/month_bill_view"
         android:layout_width="match_parent"
-        android:layout_height="150dp"/>
+        android:layout_height="wrap_content"/>
 
     <TextView
         android:layout_width="match_parent"
