Spannable text on label(help)

[HIFI_APPS]

Welcome all,

i am on my way to an experimental extension return a message with color

like this

and also another block which set text color of a label

like this
there is already a topic for this

Spannable Text on a label

Hi, I want to set Label text to spannable text, but the spannable text method is used for TextView so how can we set spannable text to Label?

but it din't work for me

now i coded as

@SimpleFunction(description = "texty")
public SpannableString texty(String message,String text_hexcolour) {
//YOUR ACTIVITY HERE

SpannableString sp = new SpannableString(message);
sp.setSpan(
new ForegroundColorSpan(Color.parseColor(text_hexcolour)),
0,
sp.length(),
0);
return sp;
}

as @ewpatton sir said

@ewpatton

A Label component wraps an Android TextView, so if you have a reference to a Label you can call getView() on it to get the underlying view and then cast that to TextView .

i did the second block

@SimpleFunction(description = "texty")
public void set_text_colour(int color,AndroidViewComponent component) {
//YOUR ACTIVITY HERE
View view = component.getView();
TextView view1 = view;
SpannableString sp1 = new SpannableString("sample text");
sp1.setSpan(
new ForegroundColorSpan(color),
0,
sp1.length(),
0);
view1.setText (sp1);
}

and got a huge error

error for my first block

[javac] An annotation processor threw an uncaught exception.
[javac] Consult the following stack trace for details.
[javac] java.lang.IllegalArgumentException: Cannot convert Java type 'android.text.SpannableString' to Yail type
[javac] at com.google.appinventor.components.scripts.ComponentProcessor.javaTypeToYailType(ComponentProcessor.java:2068)
[javac] at com.google.appinventor.components.scripts.ComponentDescriptorGenerator.outputBlockMethod(ComponentDescriptorGenerator.java:352)
[javac] at com.google.appinventor.components.scripts.ComponentDescriptorGenerator.outputComponent(ComponentDescriptorGenerator.java:160)
[javac] at com.google.appinventor.components.scripts.ComponentDescriptorGenerator.outputResults(ComponentDescriptorGenerator.java:388)
[javac] at com.google.appinventor.components.scripts.ComponentProcessor.process(ComponentProcessor.java:1103)
[javac] at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:794)
[javac] at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:705)
[javac] at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)
[javac] at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)
[javac] at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1176)
[javac] at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)
[javac] at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856)
[javac] at com.sun.tools.javac.main.Main.compile(Main.java:523)
[javac] at com.sun.tools.javac.main.Main.compile(Main.java:381)
[javac] at com.sun.tools.javac.main.Main.compile(Main.java:370)
[javac] at com.sun.tools.javac.main.Main.compile(Main.java:361)
[javac] at com.sun.tools.javac.Main.compile(Main.java:56)
[javac] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[javac] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[javac] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[javac] at java.lang.reflect.Method.invoke(Method.java:498)
[javac] at org.apache.tools.ant.taskdefs.compilers.Javac13.execute(Javac13.java:58)
[javac] at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1395)
[javac] at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:1121)
[javac] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
[javac] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
[javac] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[javac] at java.lang.reflect.Method.invoke(Method.java:498)
[javac] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[javac] at org.apache.tools.ant.Task.perform(Task.java:348)
[javac] at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
[javac] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
[javac] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
[javac] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[javac] at java.lang.reflect.Method.invoke(Method.java:498)
[javac] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[javac] at org.apache.tools.ant.Task.perform(Task.java:348)
[javac] at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:402)
[javac] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
[javac] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
[javac] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[javac] at java.lang.reflect.Method.invoke(Method.java:498)
[javac] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[javac] at org.apache.tools.ant.Task.perform(Task.java:348)
[javac] at org.apache.tools.ant.Target.execute(Target.java:435)
[javac] at org.apache.tools.ant.Target.performTasks(Target.java:456)
[javac] at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
[javac] at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
[javac] at org.apache.tools.ant.Project.executeTargets(Project.java:1260)
[javac] at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:441)
[javac] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
[javac] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
[javac] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[javac] at java.lang.reflect.Method.invoke(Method.java:498)
[javac] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[javac] at org.apache.tools.ant.Task.perform(Task.java:348)
[javac] at org.apache.tools.ant.Target.execute(Target.java:435)
[javac] at org.apache.tools.ant.Target.performTasks(Target.java:456)
[javac] at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
[javac] at org.apache.tools.ant.Project.executeTarget(Project.java:1376)
[javac] at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[javac] at org.apache.tools.ant.Project.executeTargets(Project.java:1260)
[javac] at org.apache.tools.ant.Main.runBuild(Main.java:857)
[javac] at org.apache.tools.ant.Main.startAnt(Main.java:236)
[javac] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:287)
[javac] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:113)

error for my second block

[javac] C:\Users\GOD\appinventor-sources\appinventor\components\src\edu\hifiapps\Texty\Texty.java:54: error: incompatible types: View cannot be converted to TextView
[javac] TextView view1 = view;

i request @ewpatton sir and others to help please,
thanks,

[HIFI_APPS]

is my idea possible?

[Kumaraswamy]

@HIFI_APPS

public SpannableString texty(String message,String text_hexcolour) {

Here you are trying to return SpannableString which is not possible, you need to try another way.

As I know, you can return :

• Objects
• List
• String/numbers

[Ken]

@HIFI_APPS

error for my second block

Change:

@HIFI_APPS

View view = component.getView();
TextView view1 = view;

To:
TextView view1 = component.getView();

[HIFI_APPS]

so thanks if you can can you say

@Kumaraswamy

another way

[HIFI_APPS]

no dint work

texty.java:53: error: incompatible types: View cannot be converted to TextView
[javac] TextView view1 = component.getView();

[Ken]

Sorry I forgot to cast it, try:
TextView view1 = (TextView)component.getView();

[Kumaraswamy]

I don't know much about android java but I think you can add it to a view/arrangement input.

[HIFI_APPS]

thanks ,

[HIFI_APPS]

thanks i will do it somehow or never

[Kumaraswamy]

@HIFI_APPS

or never

Never say that.

[Ken]

This may help:

Set color of TextView span in Android