If you try to trim by length, and the length of the text is smaller than the limit, you get

java.lang.StringIndexOutOfBoundsException: length=8; regionStart=0; regionLength=101 at java.lang.String.startEndAndLength(String.java:298) at java.lang.String.getChars(String.java:598) at android.text.TextUtils.getChars(TextUtils.java:81) at android.text.SpannableStringBuilder.(SpannableStringBuilder.java:65) at com.borjabravo.readmoretextview.ReadMoreTextView.updateCollapsedText(ReadMoreTextView.java:137) at com.borjabravo.readmoretextview.ReadMoreTextView.getTrimmedText(ReadMoreTextView.java:115) at com.borjabravo.readmoretextview.ReadMoreTextView.getDisplayableText(ReadMoreTextView.java:92) at com.borjabravo.readmoretextview.ReadMoreTextView.setText(ReadMoreTextView.java:86)

06-16 16:55:36.242 27838-27838/com W/System.err: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.text.Layout.getLineCount()' on a null object reference
06-16 16:55:36.244 27838-27838/com W/System.err:     at com.borjabravo.readmoretextview.ReadMoreTextView.refreshLineEndIndex(ReadMoreTextView.java:219)
06-16 16:55:36.244 27838-27838/com W/System.err:     at com.borjabravo.readmoretextview.ReadMoreTextView.access$400(ReadMoreTextView.java:36)
06-16 16:55:36.244 27838-27838/com W/System.err:     at com.borjabravo.readmoretextview.ReadMoreTextView$1.onGlobalLayout(ReadMoreTextView.java:205)
06-16 16:55:36.244 27838-27838/com W/System.err:     at android.view.ViewTreeObserver.dispatchOnGlobalLayout(ViewTreeObserver.java:912)
06-16 16:55:36.244 27838-27838/com W/System.err:     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1969)
06-16 16:55:36.244 27838-27838/com W/System.err:     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107)
06-16 16:55:36.244 27838-27838/com W/System.err:     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013)
06-16 16:55:36.244 27838-27838/com W/System.err:     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
06-16 16:55:36.244 27838-27838/com W/System.err:     at android.view.Choreographer.doCallbacks(Choreographer.java:670)
06-16 16:55:36.244 27838-27838/com W/System.err:     at android.view.Choreographer.doFrame(Choreographer.java:606)
06-16 16:55:36.244 27838-27838/com W/System.err:     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844)
06-16 16:55:36.245 27838-27838/com W/System.err:     at android.os.Handler.handleCallback(Handler.java:739)
06-16 16:55:36.245 27838-27838/com W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:95)
06-16 16:55:36.245 27838-27838/com W/System.err:     at android.os.Looper.loop(Looper.java:148)
06-16 16:55:36.245 27838-27838/com W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:5417)
06-16 16:55:36.245 27838-27838/com W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
06-16 16:55:36.245 27838-27838/com W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
06-16 16:55:36.245 27838-27838/com W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Tested on device lollipop.

This happens when text leght is shorter than field may fit without trimming and parameter app:trimMode="trimModeLine" is set.

For example If I set attributes as following: app:trimMode="trimModeLine" app:trimLength="5"

and try to set some short text : readmoretextview.setText("some text"); // lenght() = 9 which is shorter than 5 lines

It will crush.

Meanwhile attribute app:trimMode="trimModeLength" works correctly with any text lenghts

tv.setText(str); //无效

修复： ReadMoreTextView.java

@Override
public void setText(CharSequence text, BufferType type) {
    this.text = text;
    bufferType = type;
    **onGlobalLayoutLineEndIndex();**
    setText();
}

I use ReadMoreTextView in RecyclerView adapter.

-------------this crash log:

java.lang.IndexOutOfBoundsException: getChars (0 ... 241) ends beyond length 13 at android.text.SpannableStringBuilder.checkRange(SpannableStringBuilder.java:1094) at android.text.SpannableStringBuilder.getChars(SpannableStringBuilder.java:976) at android.text.TextUtils.getChars(TextUtils.java:91) at android.text.SpannableStringBuilder.(SpannableStringBuilder.java:65) at com.borjabravo.readmoretextview.ReadMoreTextView.updateCollapsedText(ReadMoreTextView.java:137) at com.borjabravo.readmoretextview.ReadMoreTextView.getTrimmedText(ReadMoreTextView.java:115) at com.borjabravo.readmoretextview.ReadMoreTextView.getDisplayableText(ReadMoreTextView.java:92) at com.borjabravo.readmoretextview.ReadMoreTextView.setText(ReadMoreTextView.java:86) at com.borjabravo.readmoretextview.ReadMoreTextView.access$200(ReadMoreTextView.java:36) at com.borjabravo.readmoretextview.ReadMoreTextView$1.onGlobalLayout(ReadMoreTextView.java:206) at android.view.ViewTreeObserver.dispatchOnGlobalLayout(ViewTreeObserver.java:982) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2410) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1437) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7397) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:920) at android.view.Choreographer.doCallbacks(Choreographer.java:695) at android.view.Choreographer.doFrame(Choreographer.java:631) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:906) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:158) at android.app.ActivityThread.main(ActivityThread.java:7229) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

-----------and this is my code:

        SpannableString ss = new SpannableString(Html.fromHtml("<font color='#5376a0'> " + 
        userNamesSb + "</font><font color='#666666'> " + action + "：</font>" + msgDesc));
        
        ss.setSpan(noUnderlineSpan, 0, userNamesSb.toString().length(), 
                           Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
        
        readMoreTV.setHighlightColor(getResources().getColor(R.color.colorAccent));
        readMoreTV.setText(ss);

please fix it, thank you!

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appBar"
        android:layout_width="match_parent"
        android:layout_height="@dimen/app_bar_large"
        android:fitsSystemWindows="false"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/toolbar_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:paddingLeft="@dimen/activity_horizontal_margin"
            android:paddingRight="@dimen/activity_horizontal_margin"
            android:paddingTop="@dimen/activity_horizontal_margin"
            app:contentScrim="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">

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

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

        </android.support.design.widget.CollapsingToolbarLayout>
    </android.support.design.widget.AppBarLayout>

In profile_layout I add a ReadMoreTextView. But it doesn't collapse in AS preview or in actual device.

Cleaned up the build configuration a little. This also includes updates to the build tools and Android target versions.

Replaced the general support dependency with the only one actually needed.

Removed all auto generated tests from the code base.

I am sorry my English, I am chinese If We customize ReadMoreTextView with app:trimExpandedText="收起" in xml file, It cant response? When I try ReadMoreTextView .setTrimCollapsedText in java code, It can response

I find the compile path wrong should be compile 'com.borjabravo:readmoretextview:1.1.1' not be compile 'com.borjabravo.readmoretextview:1.1.1' the diffrent is : , not .

Hi guys,

I tried to import your dependency, but, when I try to build on my :app, it appears:

Could not find com.borjabravo:readmoretextview:2.1.0. Required by: project :app

How can I fix it to implement?

I'm using ReadMoreTextView in RecyclerView. Getting crash due to StringIndexOutOfBoundsException so many times inside RecyclerView.

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.waspito, PID: 17585
    java.lang.StringIndexOutOfBoundsException: length=35; index=241
        at java.lang.String.getChars(String.java:788)
        at android.text.TextUtils.getChars(TextUtils.java:148)
        at android.text.SpannableStringBuilder.<init>(SpannableStringBuilder.java:68)
        at com.borjabravo.readmoretextview.ReadMoreTextView.updateCollapsedText(ReadMoreTextView.java:137)
        at com.borjabravo.readmoretextview.ReadMoreTextView.getTrimmedText(ReadMoreTextView.java:114)
        at com.borjabravo.readmoretextview.ReadMoreTextView.getDisplayableText(ReadMoreTextView.java:90)
        at com.borjabravo.readmoretextview.ReadMoreTextView.setText(ReadMoreTextView.java:84)
        at com.borjabravo.readmoretextview.ReadMoreTextView.access$200(ReadMoreTextView.java:33)
        at com.borjabravo.readmoretextview.ReadMoreTextView$1.onGlobalLayout(ReadMoreTextView.java:206)
        at android.view.ViewTreeObserver.dispatchOnGlobalLayout(ViewTreeObserver.java:1056)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2629)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1722)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7605)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1029)
        at android.view.Choreographer.doCallbacks(Choreographer.java:852)
        at android.view.Choreographer.doFrame(Choreographer.java:787)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1014)
        at android.os.Handler.handleCallback(Handler.java:883)
        at android.os.Handler.dispatchMessage(Handler.java:100)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7397)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:935)

my entire text has setOnClickListener action to call another activity, but I don't want this to happen when the user click on "read more" and "read less" part of text (I obviously simply want the text to expand and colapse). How to isolate this special parts of text to not be called on "ClickListener"?

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.text.Layout.getLineCount()' on a null object reference at com.borjabravo.readmoretextview.ReadMoreTextView.getTrimmedText(ReadMoreTextView.java:113) at com.borjabravo.readmoretextview.ReadMoreTextView.getDisplayableText(ReadMoreTextView.java:90) at com.borjabravo.readmoretextview.ReadMoreTextView.setText(ReadMoreTextView.java:84) at com.borjabravo.readmoretextview.ReadMoreTextView.setText(ReadMoreTextView.java:97)