Develop Reference

I want to use clickable text (Android)

I want to use clickable text to move from main activity to another activity, can somebody give me a sample code to understand that how this works.

TextView textview = (TextView) findViewById(R.id.textView);
textview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this,AnotherActivity.class);
startActivity(i);
}
});

In the layout of your activity, define the onclick on the textview item.
<TextView ....
android:onClick="onClick"
android:clickable="true" ... </TextView>
OnClick Method
Intent intent = new Intent(this, AnotherActivity.class);
startActivity(intent);

Android colouring app multiple background images

I am creating an android studio colouring app and need to have it so that the user can select which image they want to colour. I want it so that they click on an image button on one activity and this changes the background of the next activity that the button takes them to however I have no idea how to go about this. Any help would be greatly appreciated. Thankyou

From what I understand, you want to change the color of the next activity on button click of current activity. So, what you can do is:
button1.setOnClickListener(new View.OnClickListener{
#Override
public void onClick(View view){
Intent intent = new Intent(mContext, MyActivity2.class);
//Implement getDesiredColor to get the color according to your logic
intent.putExtra("color", getDesiredColor());
mContext.startActivity(intent);
}
});
In your second activity's onCreate
onCreate(...){
...
View rootLayout = //Initialize root layout here
Intent intent = getIntent();
if(intent.hasExtra("color")){
rootLayout.setBackgroundColor(intent.getExtra("color"));
}
...
}
Let me know in case you have any doubts.
UPDATE:
With drawable your code will become something like this:
button1.setOnClickListener(new View.OnClickListener{
#Override
public void onClick(View view){
Intent intent = new Intent(mContext, MyActivity2.class);
//Implement getDesiredDrawable to get the drawable according to your logic
intent.putExtra("drawable", getDesiredDrawable());
mContext.startActivity(intent);
}
});
In your second activity's onCreate
onCreate(...){
...
View rootLayout = //Initialize root layout here
Intent intent = getIntent();
if(intent.hasExtra("drawable")){
rootLayout.setBackground(intent.getExtra("drawable"));
//Or if you are using ImageView in your root layout to set the background image (I'm using Picasso here):
//Picasso.with(mContext).load(intent.getExtra("drawable")).into(myBackgroundImageView);
}
...
}
UPDATE 2:
You can have a hashmap mapping each imagebutton with a drawable.
e.g.
HashMap<Integer, Integer> mViewIdToDrawableMap = new HashMap<>();
mViewIdToDrawableMap.put(mImageButton1.getId(), R.drawable.image1);
mViewIdToDrawableMap.put(mImageButton2.getId(), R.drawable.image2);
mViewIdToDrawableMap.put(mImageButton3.getId(), R.drawable.image3);
public int getDesiredDrawable(View view){
return mViewIdToDrawableMap.get(view.getId());
}
How will you call this function:
button1.setOnClickListener(new View.OnClickListener{
#Override
public void onClick(View view){
Intent intent = new Intent(mContext, MyActivity2.class);
//Implement getDesiredDrawable to get the drawable according to your logic
intent.putExtra("drawable", getDesiredDrawable(view));
mContext.startActivity(intent);
}
});
Now, your last question what is rootLayout?
Lets say your activity2 where you want to show this image has somehitng like this as layyout:
<RelativeLayout>
<ImageView
...
android:id="id+/background_imageview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
...
/>
</RelativeLayout>
In your Activity2's onCreate, do somehting like this (after getting the drawable as I explained earlier):
//Here mBackgroundImageView is the background_imageview in your layout
Picasso.with(mContext).load(drawable).into(mBackgroundImageView);

how to have a single activity class for many Image Buttons

I have a footer in all the layouts for a android application.
The footer will have Image buttons like "Help", "Home", this Image buttons directly link to Help class and Home class.
Can I have a one single activity class for all the footer Image buttons.
I tried with
public class FooterItems extends Activity implements OnClickListener {
#Override
public void onClick(View view) {
if(view.getId() == R.id.footerBtnHome)
{
Intent myIntent = new Intent(view.getContext(), MainActivity.class);
startActivityForResult(myIntent, 0);
return;
}
if(view.getId() == R.id.footerBtnFeedback)
{
Intent myIntent = new Intent(view.getContext(), Feedback.class);
startActivityForResult(myIntent, 0);
return;
}
}
}
but I am not getting how to call these in a class... for example the project is having MainActivity class in which I have
ImageButton buttonFeedback = (ImageButton) findViewById(R.id.btnFeedback);
buttonFeedback.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), Feedback.class);
startActivityForResult(myIntent, 0);
}
});
When I call Feedback.class with onClick from one Image Button... layout and same footer items appears.
I want to use the generalised FooterItems class so I can have one class for footer and use in every other layout.
I am also using android:onClick="onClick" in xml for Image Buttons for footer only.
But how to call those generalised class FooterItems and make it work.
Looking forward to the reply.
thanks.

I can suggest another variant:
I think, you can add to XML android:onClick, for example:
<Button
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="#string/self_destruct"
android:onClick="selfDestruct" />
And when user click this button, android programm call method selfDistruct. You just have to implement this method. Android tutorial: http://developer.android.com/reference/android/widget/Button.html

What you are asking is not much clear.
You want to have Help, Home, etc. Image Buttons as common to all layouts in your application correct ?
If you click any Image Button, you have to show the layout on top and these buttons also has to appear on screen??
If yes my answer may help you.
You told i will create footer items as one activity, but its not good. I will prefer ViewFlipper in this case. See the layout.
<LinearLayout vertical>
<ViewFlipper id=vf>
<include layout1 />
<include layout2 />
<include layout3 />
</ViewFlipper>
<LinearLayout horizontal>
<ImageButton button1 />
<ImageButton button2 />
<ImageButton button3 />
</LinearLayout>
</LinearLayout>
Initially you will get layout1 and all image buttons on screen. If you want to show layout2 when you click button3 write onClickListener as below.
ViewFlipper vf = (ViewFlipper)findViewById(R.id.vf);
The variable vf is used to change layouts.
button3.setOnClickListener(new View.OnClickListener() {
public void onClick() {
vf.setDisplayChild(1);
}
});
I hope it may help you. Bye.

I am sure you want to implement Footer view with 2 buttons: Help and Home, this should be at bottom of every activities.
If you want to implement a code for once then follow the below steps:
Define a footer layout with 2 buttons, define android:onClick="btnHelp" for help button and android:onClick="btnHome" for home button.
Now you can include this layout inside any activities by using <include>.
Define a base activity with below 2 methods.
Now extends this base activity wherever you implements this footer layout.
public void btnHelpClick(View v)
{
// do your task for Help
}
public void btnHomeClick(View v)
{
// do your task for Home
}

click on the android phone screen

I have an app in android in which I wanna achieve the following thing:
I want to click on an image on android mobile through python script.
Does anyone know how could I achieve that?

You can create a layout with a single button. Set the background of the button as the image you want. Make the button width and height to match parent. Then register the button in a normal way to start the activity. So something 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="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="match_parent"
android:id="#+id/button1"
android:layout_height="match_parent"
android:background="#drawable/background">
</Button>
</LinearLayout>
With your activity like this:
public class ActivityA extends Activity implements OnClickListener
{
#Override
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.main);
Button buttonA = (Button) findViewById(R.id.button1);
buttonA.setOnClickListener(this);
}
#Override
public void onClick(View v) {
final Intent intent = new Intent(getApplicationContext(), ActivityB.class);
startActivity(intent);
}
}
When the user presses "back", he or she will go back to the giant button activity.

Please try this whenever you want to move from one activity to another activity..
Intent myIntent = new Intent(CurrentActivity.this,NextActivity.class);
myIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(myIntent);
Above code will take you from CurrentActivity to NextActivity....
Whenever you want that to happen just execute those three statements,
that will do your work....

Changing Activity on a clickable layout

I have this clickable LinearLayout view, im trying to have it change Activity when clicked by every time i click the object i get a error.
final LinearLayout lindet = (LinearLayout) findViewById(R.id.detials);
lindet.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent i = new Intent(SellingActivity.this, DetailsActivity.class);
startActivity(i);
finish();
}
});

Did you remember to add the DetailsActivity to the AndroidManifest?

Supporting Macarse I would add that use SellingActivity.this.finish() instead of finish()
I believe this will prove to be your problem solver.