I just succeeded add this library to my project in Android Studio. But when I tried to compile it with gradle then I got this problem:

Error:(111) Attribute "showText" has already been defined

Is there any solution for that..?

Get error with
app:outerShadowWidth="0.5"

mOuterShadowRect.width() / 2.0f
in:
paint.setShader(new RadialGradient(... , ... , here! , ...

public Paint getDefaultOuterShadowPaint() {
    final Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setStyle(Paint.Style.FILL);
    paint.setShader(new RadialGradient(CENTER, CENTER, mOuterShadowRect.width() / 2.0f, OUTER_SHADOW_COLORS, OUTER_SHADOW_POS,
            TileMode.MIRROR));
    return paint;
}

due to a change in the android Paint.measureText() the text in the GaugeView are not shown properly, since the value of measureText will be ceiled up to the next integer, the text is shown at the left side of the gauge and just one digit (without unit).
aosp-mirror/platform_frameworks_base@8e04840

I'm trying to make Signal meter with dBm value. How can I change the start and the end value. It shoule start with -94 dBm (very bad signal) and end at 0 dBm (excellent signal strength).

I am running the your code in LG Nexus(Loolipop) and all the scales is showing as zero(0) instead of 0,10,20,30,40,50,60,70,80,90,100. Please help me in resolving this.Thanks in advance

Hi
I want to develop an application with this functionality. So I found GaugeView on github, I really like this project. But because I'm just starting out with github, so I do not know how to apply some of the features of this project to my application. I would be very appreciate if you could tell me the way to apply it to my application！

I get the a XML error when i try to run the app. Here is a copy of my log cat:

06-09 14:46:04.019: E/dalvikvm(2568): Could not find class 'org.codeandmagic.android.gauge.GaugeView', referenced from method MainActivity.onCreate
06-09 14:46:04.019: W/dalvikvm(2568): VFY: unable to resolve check-cast 1091 (org/codeandmagic/android/gauge/GaugeView;) in MainActivity;
06-09 14:46:04.034: W/dalvikvm(2568): VFY: unable to resolve virtual method 6304: Lorg/codeandmagic/android/gauge/GaugeView;.setTargetValue (F)V
06-09 14:46:04.769: W/dalvikvm(2568): threadid=1: thread exiting with uncaught exception (group=0x418282d0)
06-09 14:46:04.819: E/AndroidRuntime(2568): FATAL EXCEPTION: main
06-09 14:46:04.819: E/AndroidRuntime(2568): java.lang.RuntimeException: Unable to start activity ComponentInfo{MainActivity}: android.view.InflateException: Binary XML file line #32: Error inflating class org.codeandmagic.android.gauge.GaugeView
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2355)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2391)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.ActivityThread.access$600(ActivityThread.java:151)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1335)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.os.Handler.dispatchMessage(Handler.java:99)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.os.Looper.loop(Looper.java:155)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.ActivityThread.main(ActivityThread.java:5493)
06-09 14:46:04.819: E/AndroidRuntime(2568): at java.lang.reflect.Method.invokeNative(Native Method)
06-09 14:46:04.819: E/AndroidRuntime(2568): at java.lang.reflect.Method.invoke(Method.java:511)
06-09 14:46:04.819: E/AndroidRuntime(2568): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
06-09 14:46:04.819: E/AndroidRuntime(2568): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795)
06-09 14:46:04.819: E/AndroidRuntime(2568): at dalvik.system.NativeStart.main(Native Method)
06-09 14:46:04.819: E/AndroidRuntime(2568): Caused by: android.view.InflateException: Binary XML file line #32: Error inflating class org.codeandmagic.android.gauge.GaugeView
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
06-09 14:46:04.819: E/AndroidRuntime(2568): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:365)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.Activity.setContentView(Activity.java:1912)
06-09 14:46:04.819: E/AndroidRuntime(2568): at com.Tim.Koers.minitoolbox.MainActivity.onCreate(MainActivity.java:21)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.Activity.performCreate(Activity.java:5066)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1101)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2311)
06-09 14:46:04.819: E/AndroidRuntime(2568): ... 11 more
06-09 14:46:04.819: E/AndroidRuntime(2568): Caused by: java.lang.ClassNotFoundException: org.codeandmagic.android.gauge.GaugeView
06-09 14:46:04.819: E/AndroidRuntime(2568): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
06-09 14:46:04.819: E/AndroidRuntime(2568): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-09 14:46:04.819: E/AndroidRuntime(2568): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.view.LayoutInflater.createView(LayoutInflater.java:552)
06-09 14:46:04.819: E/AndroidRuntime(2568): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
06-09 14:46:04.819: E/AndroidRuntime(2568): ... 21 more
06-09 14:46:08.019: D/Process(2568): killProcess, pid=2568
06-09 14:46:08.034: D/Process(2568): dalvik.system.VMStack.getThreadStackTrace(Native Method)
06-09 14:46:08.034: D/Process(2568): java.lang.Thread.getStackTrace(Thread.java:599)
06-09 14:46:08.034: D/Process(2568): android.os.Process.killProcess(Process.java:944)
06-09 14:46:08.034: D/Process(2568): com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:108)
06-09 14:46:08.034: D/Process(2568): java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)
06-09 14:46:08.034: D/Process(2568): java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)
06-09 14:46:08.034: D/Process(2568): dalvik.system.NativeStart.main(Native Method)

Thanks!
Tim

Error when we set some of the view attributes:
<org.codeandmagic.android.gauge.GaugeView
android:id="@+id/gauge_view2"
android:layout_below="@id/gauge_view1"
android:layout_width="150dp"
android:layout_height="150dp"
android:layout_marginTop="10dp"
gauge:showOuterShadow="true"
gauge:showOuterRim="false"
gauge:showNeedle="false"
gauge:showRanges="false"
gauge:showText="true"

gauge:textUnit="%" />

java.lang.NullPointerException
Exception details are logged in Window > Show View > Error LogThe graphics preview in the layout editor may not be accurate:
Paint.setShadowLayer is not supported. (Ignore for this session)

java.lang.NullPointerException
at android.content.res.BridgeResources.getString(BridgeResources.java:501)
at android.content.Context.getString(Context.java:334)
at org.codeandmagic.android.gauge.GaugeView.readAttrs(GaugeView.java:224)
at org.codeandmagic.android.gauge.GaugeView.(GaugeView.java:170)
at org.codeandmagic.android.gauge.GaugeView.(GaugeView.java:175)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeConstructorAccessorImpl.java:-2)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.android.ide.eclipse.adt.internal.editors.layout.ProjectCallback.instantiateClass(ProjectCallback.java:422)
at com.android.ide.eclipse.adt.internal.editors.layout.ProjectCallback.loadView(ProjectCallback.java:157)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:207)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:135)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:755)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:727)
at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
at android.view.LayoutInflater.inflate(LayoutInflater.java:373)

Error when we don't set the attributes:
<org.codeandmagic.android.gauge.GaugeView
android:id="@+id/gauge_view1"
android:layout_width="match_parent"

android:layout_height="wrap_content" />

ava.lang.ArrayIndexOutOfBoundsException: 3
at android.graphics.Gradient_Delegate$GradientPaint.precomputeGradientColors(Gradient_Delegate.java:110)
at android.graphics.RadialGradient_Delegate$RadialGradientPaint.createContext(RadialGradient_Delegate.java:128)
at apple.awt.OSXSurfaceData.setupPaint(OSXSurfaceData.java:751)
at apple.awt.OSXSurfaceData.setupGraphicsState(OSXSurfaceData.java:1038)
at apple.awt.OSXSurfaceData.setupGraphicsState(OSXSurfaceData.java:1004)
at apple.awt.OSXSurfaceData.doOval(OSXSurfaceData.java:1283)
at apple.awt.CRenderer.fillOval(CRenderer.java:273)
at apple.awt.CRenderer.fillOval(CRenderer.java:261)
at sun.java2d.pipe.ValidatePipe.fillOval(ValidatePipe.java:90)
at sun.java2d.SunGraphics2D.fillOval(SunGraphics2D.java:2398)
at android.graphics.Canvas_Delegate$5.draw(Canvas_Delegate.java:708)
at com.android.layoutlib.bridge.impl.GcSnapshot.drawInLayer(GcSnapshot.java:613)
at com.android.layoutlib.bridge.impl.GcSnapshot.draw(GcSnapshot.java:583)
at android.graphics.Canvas_Delegate.draw(Canvas_Delegate.java:1190)
at android.graphics.Canvas_Delegate.native_drawOval(Canvas_Delegate.java:699)
at android.graphics.Canvas.native_drawOval(Canvas.java:-1)
at android.graphics.Canvas.drawOval(Canvas.java:979)
at org.codeandmagic.android.gauge.GaugeView.drawRim(GaugeView.java:630)
at org.codeandmagic.android.gauge.GaugeView.drawGauge(GaugeView.java:592)
at org.codeandmagic.android.gauge.GaugeView.onSizeChanged(GaugeView.java:576)
at android.view.View.sizeChange(View.java:14400)
at android.view.View.setFrame(View.java:14375)
at android.view.View.layout(View.java:14286)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1076)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4559)
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4559)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4559)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14289)
at android.view.ViewGroup.layout(ViewGroup.java:4559)

Index: trunk/gaugeview-library/src/org/codeandmagic/android/gauge/GaugeView.java

--- trunk/gaugeview-library/src/org/codeandmagic/android/gauge/GaugeView.java (revision 11)
+++ trunk/gaugeview-library/src/org/codeandmagic/android/gauge/GaugeView.java (working copy)
@@ -235,8 +235,8 @@

private void readRanges(final Resources res, final int rangesId, final int colorsId) {
    if (rangesId > 0 && colorsId > 0) {

-- final String[] ranges = res.getStringArray(R.array.ranges);
-- final String[] colors = res.getStringArray(R.array.rangeColors);
++ final String[] ranges = res.getStringArray(rangesId);
++ final String[] colors = res.getStringArray(colorsId);
if (ranges.length != colors.length) { throw new IllegalArgumentException(
"The ranges and colors arrays must have the same length."); }

Why is this marked in Android Arsenal as new when it is at least 1 to 4 years old? Nevertheless a great view...!

My gauge works find on android 5, but has some drawing problem in android 6. As it's clear in the following photo, there are 3 rectangles in the gauge! one in the center circle of needle, 2nd in the inner blue circle and 3rd goes to the outer circle.

Rendering Problems Missing styles. Is the correct theme chosen for this layout? Use the Theme combo box above the layout to choose a different layout, or fix the theme style references. The following classes could not be found:
- org.codeandmagic.android.gauge.GaugeView (Fix Build Path, Edit XML, Create Class)
Tip: Try to build the project. Tip: Try to refresh the layout. Failed to find '?attr/textEditSuggestionItemLayout' in current theme. (15 similar errors not shown) Tip: Try to refresh the layout.