Semi Circular Progress bar Android - drawing semi circle

问题

I created a semi circular progress bar using this devadvance\circularSeekBar and it looks like this when I select that custom view from the palette.

.

In this I have two Relative layouts with weights. Weight of the layout containing the progress bar is 2 and the bottom one has weight of 3. And layout width and height of the progress bar is set to wrap content.

So my issue is why does the progress bar look like this when selected from palette? Is it that the canvas size takes the perfect square? What I want is the semi circular progress bar to be fully enclosed by the layout like this.

Any light on this is appreciated.

EDIT xml code

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main_parent_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:fitsSystemWindows="true">

    <include layout="@layout/toolbar"/>

    <android.support.v4.widget.DrawerLayout
        android:id="@+id/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3">

        <LinearLayout
            android:id="@+id/content_frame"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <RelativeLayout xmlns:app = "http://schemas.android.com/apk/res-auto"
                android:id ="@+id/calorie_frame"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="2"
                android:clickable="true">
                <com.devadvance.circularseekbar.CircularSeekBar
                    android:id="@+id/calorie_progressbar"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    app:start_angle = "180"
                    app:end_angle = "0"
                    app:progress = "25"
                    app:circle_x_radius="200"
                    app:circle_y_radius="200"
                    app:circle_stroke_width = "30"
                    app:use_custom_radii="true"
                    app:circle_color ="#FFFACD"

                    android:layout_alignParentEnd="false"
                    android:layout_alignParentStart="false"
                    android:layout_centerInParent="true" />
                </RelativeLayout>

            <RelativeLayout
                android:id="@+id/exercise_frame"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="3"
                android:clickable="true">

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textAppearance="?android:attr/textAppearanceMedium"
                    android:text="@string/calorie_label"
                    android:id="@+id/textView"
                    android:layout_marginBottom="40dp"
                    android:layout_alignParentBottom="true"
                    android:layout_alignParentRight="true"
                    android:layout_alignParentEnd="true"
                    android:layout_marginRight="20dp" />

                <ImageView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:id="@+id/imageView"
                    android:layout_alignBottom="@+id/textView"
                    android:layout_alignParentLeft="true"
                    android:layout_alignParentStart="true"
                    android:layout_marginLeft="50dp"
                    android:layout_marginStart="50dp"
                    android:contentDescription="@string/exercise_image" />

            </RelativeLayout>
        </LinearLayout>

        <ListView
            android:id="@+id/left_drawer"
            android:layout_width="240dp"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:choiceMode="singleChoice"
            android:divider="@android:color/transparent"
            android:dividerHeight="0dp"
            android:background="#999"/>
    </android.support.v4.widget.DrawerLayout>

</LinearLayout>

回答1:

Problem is canvas height that you have. You have height for a circle and you draw half of circle on it. Try this:https://github.com/natasam/DemoProgressViewsLibApp It has just what you need and you can easily customize ArcProgressBar to your needs. And height is height of arc, it is not the case of full circle like yours. You can also set padding, margins, width what you wish.

回答2:

add this

android:layout_height="0dp"

insted of this

android:layout_height="match_parent" 

for ur relative layout where you added weight property.

for

android:id="@+id/exercise_frame"   
android:id ="@+id/calorie_frame"

ids change height="0dp"

hope it works...

回答3:

I still didn't find the reason why it happens as shown but my guess is that it's supposed to work like that. Anyway I replaced it with this lzyzsd/CircleProgress and it works pretty well enough for my use case.

Similar awesome stuff can be found here android-arsenal

来源：https://stackoverflow.com/questions/27796721/semi-circular-progress-bar-android-drawing-semi-circle