Develop Reference

Android : Scroll Screen when keyboard showing using ConstraintLayout

I am using android.support.constraint.ConstraintLayoutwith four EditText and one Button. When clicked on First Edittext, SoftInput Keyboard visible then EditText and Button Hidden.
I tried in ManiFeast.xml
android:windowSoftInputMode="adjustResize"
android:windowSoftInputMode="adjustPan"
android:windowSoftInputMode="adjustResize|stateVisible"
But did work.
Any suggestion to make screen scrollable when not using ScrollView
its my Manifest.xml Activity tag
<application
.
.
.
<activity android:name=".MainActivity"
android:windowSoftInputMode="adjustResize|stateVisible"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

There is no way to tell when the keyboard is showing. So what you want isn't possible. What you can do is stick the whole thing in a ScrollView so its always scrollable. Then it will still be scrollable when the keyboard is up.

Downloaded .APK showing activity names at the top of the app?

I am having an android app developed and the developer sent me the .APK file so I can test the first version. I have successfully installed the .APK file on my Android device. However, when I run it, the app shows the name of each activity (with the app's logo) at the top, as shown in the following link http://www.quickid.net/activity.JPG (StackOverflow won't let me post images without a level 10 reputation). The left picture shows the MainActivity, and the right picture shows the startTrail activity. So, what's up with that? Is it some kind of test mode? How can I run the app as it would normally be run as if it were downloaded from the Play store, without it showing the activity names at the top? Also, when the app puts text in the notification bar, it says "Rolling text on statusbar" before showing the text.

That is the ActionBar, if the developer does not want to use it, he must change the default theme to Theme.Holo.NoActionBar or another that hides the action bar.

At the top of most activities is the activity's label. This is set in the App Manifest (AndroidManifest.xml). In <activity> you can add the attribute android:label.
By default it looks so:
<activity android:name=".Activity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
If you want to change the label, add a String value, and put this to android:label. If you want no label, add android:theme="#android:style/Theme.NoTitleBar". So it looks like this:
<activity android:name=".Activity"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

Android - Removing app Tittle bar & colored Dialog textbox

I have two questions, so i posted both here, instead of opening two questions separated.
I wonder, how can I remove my app Tittle bar?? I don't want to be seen when I start my app on phone
Can I color my dialog box like this in example -> To make my dialog tittle bar green and dialog background grey ??
I made this photo in paint, but this is how I would like to my alert dialog looks like :)

To remove the title bar beneath the Notification Bar, you can add this single line of code to your Activity declaration in the Mainfest.xml:
android:theme="#android:style/Theme.Black.NoTitleBar"
This is how I used it:
<activity
android:name=".Splash"
android:theme="#android:style/Theme.Black.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

For Question 1:
use requestWindowFeature(Window.FEATURE_NO_TITLE);
For Question 2:
How to change dialog background color programmatically?

Running the Android app without TitleBar

As by default, the application name is appearing on one label like TextView. How do i remove my titlebar permanently for my application?
Any ideas?

You can use below code for that -
<activity android:name="YourActivityname" android:theme="#android:style/Theme.NoTitleBar" />
If you want the full screen of your device you can use below code -
<activity android:name="YourActivityname" android:theme="#android:style/Theme.NoTitleBar.Fullscreen" />
And, also refer Developer's Site

That is a setting based on the activity in your android manifest file.
Use the No Title Bar theme for your activity.
<activity android:name="MyActivityName" android:theme="#android:style/Theme.NoTitleBar" />

Android -- How to disscociate the name of the application from the titlebar?

I added a custom title-bar to an android application and this titlebar (which is a plain png) shows up inside the main activity. The problem is that the main activity also defines the name of the application using the label tag like this:
<activity android:name=".MainActivity"
android:theme="#style/customTheme"
android:screenOrientation="portrait"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
And this label is also reported on the titlebar! How to dissociate the two? (Like basically, still be able to give a name to the application without affecting my custom title-bar).
Thanks!

You can change the header of any activity by using setTitle("THE TITLE"); in the java code for the page. If you want to use a string defined in the XML FILES, you can use setTitle(R.string.stringName).

My opinion is to create your own custom title bar in the top of the screen and set the no title bar option in the manifest for the activity.
android:theme="#android:style/Theme.NoTitleBar"

try changing the label of your mainactivity to something like this android:label="#string/main_header" and define the string header in the strings.xml...
hope this good help you...