I have the following code where MyClass basically extends View. I was wondering if I need to use both setContentView(R.layout.activity_mainlcass_app) and setContentView(myDrawing) to show the 2D graphics that I draw in MyClass.
public class MainClass extends Activity {
MyClass myDrawing;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mainlcass_app);
myDrawing = new myDrawing(this);
setContentView(myDrawing);
myDrawing.requestFocus();
}
}
No, You can't do that. The second layout will override on the parent view.
In you main layout (activity_mainlcass_app) just add MyClass
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<com.example.MyClass
android:id="#+id/myclass"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
Try like this
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<com.example.firstactivity
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
<com.example.secondactivity
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</LinearLayout>
For more information check this link and this example
If you want new drawing on top of other (with different layouts sizes maybe) use FrameLayout for original layout and use gravity to position new drawing and use addView methods of activity.
Related
This question already has answers here:
Software keyboard resizes background image on Android
(16 answers)
Closed 6 months ago.
I am developing an application in which the background image get shrink on keyboard pop-up. My .xml is as follows :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:facebook="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/background" >
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
/**
Other stuff
*/
</RelativeLayout>
</ScrollView>
</RelativeLayout>
I searched on Google and found that, to add
android:windowSoftInputMode="stateVisible|adjustPan"
in my manifest file. But its of no use.
Edit :
My Layout before key board pop up looks like :
And after pop up like:
Please check the difference in background image. In image 1 image is in size and in image 2 background image shrink-ed. I need the footer and background get shift upward on keyboard popup.
What I am missing or doing wrong please suggest me.
Just use in your onCreate() this code:
protected void onCreate(Bundle savedInstanceState) {
...
getWindow().setBackgroundDrawableResource(R.drawable.your_image_resource);
...
}
and eliminate this line in your xml:
android:background="#drawable/background"
Read more at:
http://developer.android.com/reference/android/view/Window.html
I had faced the similar issue once, mine was solved by using the below properties in manifest use it where your activity is declared.
android:windowSoftInputMode="stateHidden|adjustResize|adjustPan"
Hey can you please try adding this
android:isScrollContainer="false"
in your ScrollView. It has solved my problem once. Might help u too.
Also, add this to your activity in manifest.xml
android:windowSoftInputMode="adjustPan"
Hope it helps..!! :)
Ok if I got your question right, you want a layout with a background and a scrollview. And when the softkeyboard pops up, you want to resize the scrollview, but keep the background at full size right?
if that's what you want than I may have found a workaround for this issue:
What you can do is make 2 activities.
Activity 1:
public class StartActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent StartApp = new Intent(this, DialogActivity.class);
startActivity(StartApp); // Launch your official (dialog) Activity
setContentView(R.layout.start); // your layout with only the background
}
}
Activity2:
public class DialogActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND); // get rid of dimming
this.requestWindowFeature(Window.FEATURE_NO_TITLE); //get rid of title bar (if you want)
setContentView(R.layout.dialog); //Dialog Layout with scrollview and stuff
Drawable d = new ColorDrawable(Color.BLACK); //make dialog transparent
d.setAlpha(0);
getWindow().setBackgroundDrawable(d);
}
}
start layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/test"> //your background
</LinearLayout>
dialog layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent"
android:layout_width="fill_parent">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- All your Scrollview Items -->
</LinearLayout>
</ScrollView>
</RelativeLayout>
AndroidManifest.xml
start Activity:
android:theme="#android:style/Theme.NoTitleBar.Fullscreen">
dialog Activity
android:theme="#android:style/Theme.Dialog"
android:windowSoftInputMode="adjustResize"
android:excludeFromRecents="true"
Edit:
To finish Activities at once use the following somewhere inside your DialogActivity (example: override the backbutton):
#Override
public void onBackPressed() {
Intent intent = new Intent(getApplicationContext(), StartActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra("EXIT", true);
startActivity(intent);
}
and in onCreate() of StartActivity:
if (getIntent().getBooleanExtra("EXIT", false)) {
finish();
}
else {
Intent StartApp = new Intent(this, TestActivity.class);
startActivity(StartApp);
}
Screenshots!
Normal
Clicked the EditText box
After Scrolled down (ps: i put textbox inside scrollview thats why its gone ;) )
I hope this will help your out ;)
I had the same issue.
Add your outer layout background inside onCreate method as show below
getWindow().setBackgroundDrawableResource(R.drawable.login_bg);
and add your outer layout as
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#4d000000"
><other code></ScrollView></RelativeLayout>
Add android:layout_weight="1" for the outer layout and don't set background in xml file
I think this helps someone
You should move the android:background="#drawable/background" in an ImageView above ScrollView. When the keyboard pops up it effectivly makes the screen smaller, and having an image as background you have no control on how it is resized/cropped.
So, assuming you want to have the image full width but keep the ascpect ratio try this:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:facebook="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="#drawable/background"
android:scaleType="centerCrop" />
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
/**
Other stuff
*/
</RelativeLayout>
</ScrollView>
</RelativeLayout>
You can try different android:scaleType values to achive your desired effect. If you want the image to be cropped from the top instead of the default middle crop, see here on how to achieve this, or try using this library
Instead of android:windowSoftInputMode="stateVisible|adjustPan", you should change to android:windowSoftInputMode="stateVisible|adjustResize". It worked for me.
Use ScrollView as Top parent.
It will be scrolled up and down automatically when you open and close keyboard.
Why don't you do like this
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
android:focusable="true"
android:background="#drawable/background"
android:focusableInTouchMode="true">
<RelativeLayout
android:id="#+id/relative"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:focusable="true"
android:focusableInTouchMode="true"
/**
Other stuff
*/
>
</RelativeLayout>
</ScrollView>
You should use the adjustResize option for the windowSoftInputMode setting on the Activity in your AndroidManifest.xml file.
i am using below view heirarchy and its working fine for me:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ScrollView
android:id="#+id/rfqItemsParentScrollView"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
I have created an xml file like this:
<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/list" >
</ListView>
and an activity:
public class ExampleActivity extends ListActivity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mainlist);
}
}
As you see, I have not done anything else. But I'am getting the error:
Your content must have a ListView whose id attribute is 'android.R.id.list'
Even though I have the android:id="#+id/list" line in my xml.
What is the problem?
Rename the id of your ListView like this,
<ListView android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
Since you are using ListActivity your xml file must specify the keyword android while mentioning to a ID.
If you need a custom ListView then instead of Extending a ListActivity, you have to simply extend an Activity and should have the same id without the keyword android.
You should have one listview in your mainlist.xml file with id as #android:id/list
<ListView
android:id="#android:id/list"
android:layout_height="wrap_content"
android:layout_height="fill_parent"/>
<ListView android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
this should solve your problem
Exact way I fixed this based on feedback above since I couldn't get it to work at first:
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#android:id/list"
>
</ListView>
MainActivity.java:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addPreferencesFromResource(R.xml.preferences);
preferences.xml:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
<PreferenceCategory
android:key="upgradecategory"
android:title="Upgrade" >
<Preference
android:key="download"
android:title="Get OnCall Pager Pro"
android:summary="Touch to download the Pro Version!" />
</PreferenceCategory>
</PreferenceScreen>
Inherit Activity Class instead of ListActivity you can resolve this problem.
public class ExampleActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mainlist);
}
}
<ListView android:id="#id/android:list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:drawSelectorOnTop="false"
android:scrollbars="vertical"/>
One other thing that affected me: If you have multiple test devices, make sure you are making changes to the layout used by the device. In my case, I spent a while making changes to xmls in the "layout" directory until I discovered that my larger phone (which I switched to halfway through testing) was using xmls in the "layout-sw360dp" directory. Grrr!
I am new to Android development and I have a question regarding custom views and using xml for view customization.
So i my code I am having a view defined using the extended view class i.e.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Display display = getWindowManager().getDefaultDisplay();
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
draw = new DrawView(this, display.getWidth(), display.getHeight(), vibrator);
setContentView(draw);//custom view called DrawView
}
And in the DrawView class I am performing operations using the canvas.
My question is,
Can I use XML layouts combined with this view that I have defined?
I need to add a few buttons to this custom view, how can I achieve that in this scenario.
Thank you.
You can embed a custom view inside a layout. Here is an example:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="horizontal" android:background="#FFFFFF">
<ListView android:id="#+id/channelsLogos" android:scrollbars="none"
android:layout_height="fill_parent" android:layout_weight=".20"
android:layout_width="100dip">
</ListView>
<test.poc.CustomScrollView
android:id="#+id/scrollViewVertical" android:scrollbars="none"
android:layout_weight=".80" android:layout_width="fill_parent"
android:layout_height="fill_parent">
</test.poc.CustomScrollView>
</LinearLayout>
CustomScrollView is a custom component in package test.poc
Make sure you use the correct constructor while doing this.
I have a ViewFlipper defined that contains 3 views...
<?xml version="1.0" encoding="utf-8"?>
<ViewFlipper xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/flipper" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<include android:id="#+id/first" layout="#layout/first_view" />
<include android:id="#+id/second" layout="#layout/second_view" />
<include android:id="#+id/third" layout="#layout/third_view" />
</ViewFlipper>
I also have a custom View defined within my Activity...
private class CompassView extends View {
#Override
protected void onDraw(Canvas canvas) {
...
}
}
Some how, I need these linked together so that the 'third_view' defined in the XML layout file needs to be a CompassView, or have a CompassView added to it.
What I can do is drop the 'third_view' from the layout and then add in the CompassView manually..
viewFlipper = (ViewFlipper)findViewById(R.id.flipper);
viewFlipper.addView(new CompassView(this));
But then I lose the ability to define other view controls within the layout file.
Can I add CompassView to 'third_view' declaratively?
If the question is how to add a custom view in an Android XML layout file, try this:
<com.example.CustomView
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</com.example.CustomView>
The open and close tags should just be the fully qualified class of your custom view.
I've created my own view by creating a subclass of the SurfaceView class.
However I can't figure out how to add it from the xml layout file. My current main.xml looks like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<View
class="com.chainparticles.ChainView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
What have I missed?
Edit
More info
My view looks like this
package com.chainparticles;
public class ChainView extends SurfaceView implements SurfaceHolder.Callback {
public ChainView(Context context) {
super(context);
getHolder().addCallback(this);
}
// Other stuff
}
And it works fine like this:
ChainView cview = new ChainView(this);
setContentView(cview);
But nothing happens when trying to use it from the xml.
You want:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<com.chainparticles.ChainView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
Edit:
After seeing the rest of your code it's probably throwing because you can't call getHolder in the constructor while being inflated. Move that to View#onFinishInflate
So:
#Override
protected void onFinishInflate() {
getHolder().addCallback(this);
}
If that doesn't work try putting that in an init function that you call in your Activitys onCreate after setContentView.
It was probably working before because when inflating from xml the constructor:
View(Context, AttributeSet) is called instead of View(Context).
What you missed in your example was the tag name, it supposed to be "view" (first non-capital) not "View". Although you can put your class name as the tag name most of the time, it's impossible to do that if your class is inner class, because "$" symbol, which is used in Java to reference inner classes is restricted in XML tags.
So, if you want to use inner class in your XML you should write like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<view
class="com.chainparticles.Foo$InnerClassChainView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
The thing is that both "view" and "View" tags exist in the schema. "View" tag (started with capital letter) will generate a View class, while "view" tag, when parsed, will examine the class attribute.