Black screen for 5-10 seconds on activity start

Question

I'm using Rich edit text library to create HTML in edit-text on android. Here is the GitHub link to the project.

According to the demo, I register the RTApi and RTManager on Activity start but it add a few seconds delay with a black empty screen on start. Code to register that is

RTApi rtApi = new RTApi(this, new RTProxyImpl(this), new RTMediaFactoryImpl(this, true));
RTManager rtManager = new RTManager(rtApi, savedInstanceState);

And here is the logcat on activity start

E/AssetIndex: assets.index
E/AssetIndex: java.io.FileNotFoundException: assets.index
E/AssetIndex:     at android.content.res.AssetManager.openAsset(Native Method)
E/AssetIndex:    at android.content.res.AssetManager.open(AssetManager.java:334)
E/AssetIndex:    at android.content.res.AssetManager.open(AssetManager.java:308)
E/AssetIndex: at com.onegravity.rteditor.fonts.AssetIndex.getAssetIndex(AssetIndex.java:46)
E/AssetIndex: at com.onegravity.rteditor.fonts.FontManager.getAssetFonts(FontManager.java:156)
E/AssetIndex:     at com.onegravity.rteditor.fonts.FontManager.getFonts(FontManager.java:97)
E/AssetIndex:     at com.onegravity.rteditor.toolbar.HorizontalRTToolbar.getFontItems(HorizontalRTToolbar.java:213)
E/AssetIndex:     at com.onegravity.rteditor.toolbar.HorizontalRTToolbar.onFinishInflate(HorizontalRTToolbar.java:177)
E/AssetIndex:     at android.view.LayoutInflater.rInflate(LayoutInflater.java:814)
E/AssetIndex:     at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
E/AssetIndex:     at android.view.LayoutInflater.parseInclude(LayoutInflater.java:916)
E/AssetIndex:     at android.view.LayoutInflater.rInflate(LayoutInflater.java:802)
 E/AssetIndex:     at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
E/AssetIndex:     at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
E/AssetIndex:     at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
E/AssetIndex:     at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:257)
E/AssetIndex:     at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
E/AssetIndex:     at com.workmatec.apps.androidapp.UIElements.AppFormActivity.onCreate(AppFormActivity.java:91)
E/AssetIndex:     at android.app.Activity.performCreate(Activity.java:6020)
E/AssetIndex:     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
E/AssetIndex:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2259)
E/AssetIndex:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2368)
E/AssetIndex:     at android.app.ActivityThread.access$800(ActivityThread.java:149)
E/AssetIndex:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1284)
E/AssetIndex:     at android.os.Handler.dispatchMessage(Handler.java:102)
E/AssetIndex:     at android.os.Looper.loop(Looper.java:135)
E/AssetIndex:     at android.app.ActivityThread.main(ActivityThread.java:5299)
E/AssetIndex:     at java.lang.reflect.Method.invoke(Native Method)
E/AssetIndex:     at java.lang.reflect.Method.invoke(Method.java:372)
E/AssetIndex:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
E/AssetIndex:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
E/Minikin: addFont failed to create font /system/fonts/jb

Here is my Layout File

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.workmatec.apps.androidapp.UIElements.AppFormActivity">

<include
    android:id="@+id/rte_toolbar_container"
    layout="@layout/rte_toolbar" />

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_above="@id/rte_toolbar_container">

    <LinearLayout
        android:id="@+id/appForm"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/app_background"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">

    </LinearLayout>
</ScrollView>

XML of RTE_toolbar.xml

    <?xml version="1.0" encoding="utf-8"?>
<HorizontalScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:background="?attr/actionBarItemBackground"
    android:scrollbarStyle="outsideOverlay" >

    <com.onegravity.rteditor.toolbar.HorizontalRTToolbar
        android:id="@+id/rte_toolbar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="?attr/actionBarItemBackground"
        android:orientation="horizontal" >

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_bold"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarBold" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_italic"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarItalic" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_underline"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarUnderline" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_strikethrough"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarStrikethrough" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_superscript"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarSuperscript" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_subscript"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarSubscript" />

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

        <Spinner
            android:id="@+id/toolbar_font"
            style="?attr/rte_ToolbarSpinner"
            android:background="?attr/rte_icToolbarFont" />

        <Spinner
            android:id="@+id/toolbar_fontsize"
            style="?attr/rte_ToolbarSpinner"
            android:background="?attr/rte_icToolbarFontSize" />

        <Spinner
            android:id="@+id/toolbar_fontcolor"
            style="?attr/rte_ToolbarSpinner"
            android:background="?attr/rte_icToolbarFontColor" />

        <Spinner
            android:id="@+id/toolbar_bgcolor"
            style="?attr/rte_ToolbarSpinner"
            android:background="?attr/rte_icToolbarBGColor" />

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

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_number"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarNumber" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_bullet"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarBullet" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_inc_indent"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarIncIndent" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_dec_indent"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarDecIntent" />

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

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_align_left"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarAlignLeft" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_align_center"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarAlignCenter" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_align_right"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarAlignRight" />

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

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_link"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarLink" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_image"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarImage" />

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_image_capture"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarCapture" />

        <!-- com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_audio"
            style="@style/ToolbarButton"
            android:background="?attr/rte_icToolbarAudio" /-->

        <!-- com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_video"
            style="@style/ToolbarButton"
            android:layout_marginRight="4dip"
            android:background="?attr/rte_icToolbarVideo" /-->

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

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_undo"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarUndo"/>

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_redo"
            style="@style/RTE_ToolbarButton"
            android:background="?attr/rte_icToolbarRedo"/>

        <com.onegravity.rteditor.toolbar.RTToolbarImageButton
            android:id="@+id/toolbar_clear"
            style="@style/RTE_ToolbarButton"
            android:layout_marginRight="4dip"
            android:background="?attr/rte_icToolbarClear"/>

    </com.onegravity.rteditor.toolbar.HorizontalRTToolbar>

</HorizontalScrollView>

RTE Toolbar Button style

<style name="RTE_ToolbarButton" parent="@android:style/Widget.ImageButton">
    <item name="android:layout_width">wrap_content</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:layout_gravity">center</item>
    <item name="android:layout_marginTop">4dip</item>
    <item name="android:layout_marginBottom">4dip</item>
    <item name="android:layout_marginLeft">4dip</item>
    <item name="android:gravity">center</item>
    <item name="android:adjustViewBounds">true</item>
</style>

I don't know about it, that's why i paste the logcat as it is. — Zeeshan Ahmed, Nov 19 '15 at 13:12
Then please post your xml layout of AppFormActivity, that in the setContentView call — Nanoc, Nov 19 '15 at 13:13

score 2 · Accepted Answer · edited May 23 '17 at 12:23

2

I had the same problem. I just added assets.index file to the assets folder of my project. The file has followings:

<?xml version="1.0"?>
<project default="createAssetIndex">
    <target name="createAssetIndex">
        <fileset id="assets.fileset" dir="assets/" includes="**"
            excludes="asset.index" />
        <pathconvert pathsep="${line.separator}" property="assets"
            refid="assets.fileset">
            <mapper>
                <globmapper from="${basedir}/assets/*" to="*"
                    handledirsep="yes" />
            </mapper>
        </pathconvert>
        <echo file="assets/assets.index">${assets}</echo>
    </target>
</project>

For more details please follow this link: determine wheteher android asset entry is a file or directory

edited May 23 '17 at 12:23

Community

1
1

answered Jan 06 '16 at 16:31

mqb

36
4

I've checked it and it worked like a champ! Thanks buddy. – Zeeshan Ahmed Mar 07 '16 at 07:34
Now the black screen issue is resolved but it takes some time to start the activity and in logcat it show this. "E/Minikin: addFont failed to create font /system/fonts/jb" – Zeeshan Ahmed Mar 09 '16 at 07:47

score 0 · Answer 2 · answered Apr 26 '16 at 05:29

The demo requires you to add this block of code to the build.gardle file of your project so the assest.index file is created during compilation:

task indexAssets {
    description 'Index Build Variant assets for faster lookup by AssetManager'

    ext.assetsSrcDir = file( "${projectDir}/src/main/assets" )

    inputs.dir assetsSrcDir

    doLast {
        android.applicationVariants.each { target ->
            // create index
            def contents = ""
            def tree = fileTree(dir: "${ext.assetsSrcDir}", include: ['**/*.ttf'], exclude: ['**/.svn/**', '*.index'])
            // use this instead if you have assets folders in each flavor:
            // def tree = fileTree(dir: "${ext.variantPath}", exclude: ['**/.svn/**', '*.index'])
            tree.visit { fileDetails ->
                contents += "${fileDetails.relativePath}" + "\n"
            }

            // create index file
            def assetIndexFile = new File("${ext.assetsSrcDir}/assets.index")
            assetIndexFile.write contents
        }
    }
}

indexAssets.dependsOn {
    tasks.matching { task -> task.name.startsWith( 'merge' ) && task.name.endsWith( 'Assets' ) }
}

tasks.withType( JavaCompile ) {
    compileTask -> compileTask.dependsOn indexAssets
}

indexAssets

If you don't have the asset folder, create it like the following in Android Studio :

Select your project, then FILE --> NEW--> FOLDER --> ASSET

I've found that if you have the font folder in the asset, the editor can be launched faster than without.

I've the assets folder on my project directory and also has the index file but still facing the problem. When I click the button to start the activity which contains the RT editor, it hangs for somtime and then start the acticity and display the error message logcat as "E/Minikin: addFont failed to create font /system/fonts/jb" — Zeeshan Ahmed, May 17 '16 at 08:06

Black screen for 5-10 seconds on activity start

2 Answers2