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);
Related
I created an activity on android studio and I have put there something like 20 ImageButtons. I want to use it as on each click on an image it will move to a new activity. All of the Image Buttons are working on the same principle, my app is a game, and each image represents a level. I want to build one function that will be used on all buttons and will move the user to a new activity according to the data(the properties of the image button) and use that data on the new activity. Every level has its own activity and the main activity is the menu of the game.
Below is my code:
public ImageButton beatsCall; public void Beats(){ beatsCall=(ImageButton)findViewById(R.id.beats); beatsCall.setOnClickListener(new View.OnClickListener() { #Override public void onClick(View v) { Intent toy = new Intent(Levels.this,Beats.class); startActivity(toy); } }); }
You need to provide more information and code. However, you may want to try set a distinct onClickListener and then set all the imageButtons to that listener that will perform an action depending on the button clicked. For example, say you have 4 imageButtons and you want to perform a different action (in your case, start a new activity) for each different button click.
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
//Start activity 1 here, for example
Intent intent = new Intent(this, YourNewActivity1.class);
String message = v.getId().toString;
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
break;
case R.id.textView2:
//Start activity 2 here
break;
case R.id.textView3:
//Start activity 3 here
break;
case R.id.textView4:
//Start activity 4 here
}
}
};
button1.setOnClickListener(listener);
button2.setOnClickListener(listener);
button3.setOnClickListener(listener);
button4.setOnClickListener(listener);
This is assuming you have the imageButtons set up in your layout file and you have them initialized in your activity.
In your new activity, you can get the message as such:
Intent intent = getIntent();
String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
if (some condition with message){
do something
}
You may also check out this documentation for further information regarding intents.
Something like this? In your xml make your images clickable and give them ID's like this...
<ImageView
android:id="#+id/level_1_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
/>
Then call a function like this in your Activity's onCreate
private void setupButtons() {
findViewById(R.id.level_1_button).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(getApplication(), LevelOne.class));
}
});
findViewById(R.id.level_2_button).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(getApplication(), LevelTwo.class));
}
});
}
You could assign a tag via android:tag to each of your views and then use your single listener to switch on the view's tag to branch the behavior you want.
Hi i am creating a simple educational game in which user has to press three images in order to proceed to the next level and in next level user has to press 5 images.
i have gone through the on click but i using onIntent intent = new Intent(this.getApplicationContext(), Activity.class);
this.startActivity(intent, 0); i am only able to start new activity on single button pressed but i wanted to start new activity when user has finished pressing three image Buttons.
Thanks in advanced.
you can use global int variable and increase it every button click and if its more than your button number open new activity
public int btn = 0;
MyButton.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
if(btn >= 2) {
//open your activity
}
else{
btn++;
}
}
});
Based on my understanding of your problem,I have provided a possible simple implementation.
Use a simple data structure like queue or stack. When a image is tapped, add information about the image to the data structure. After adding the information to data structure see if number of items in data structure is equal to 3 ? if yes check data structure has info about the required three images and not just info about the same image (happens if user taps on same image more than once). If condition is met then call startActivity(). Generalize this so that you can reuse the logic in different activities, irrespective of the number of images.
Hi i finally achieved my desired activity. now with this after checking two check box app will start new activity.
`private CheckBox chkIos, chkAndroid, chkWindows;
private Button btnDisplay;
OnClickListener checkBoxListener;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
chkIos = (CheckBox) findViewById(R.id.chkIos);
chkAndroid = (CheckBox) findViewById(R.id.chkAndroid);
checkBoxListener =new OnClickListener() {
public void onClick(View v) {
if(chkIos.isChecked()&&chkAndroid.isChecked()) {
Intent i1=new Intent(getApplicationContext(), Main1.class);
startActivity(i1);
if(chkAndroid.isChecked()) {
Intent i2=new Intent(getApplicationContext(), Main1.class);
startActivity(i1);
}
}
}
};
chkIos.setOnClickListener(checkBoxListener);
chkAndroid.setOnClickListener(checkBoxListener);
}
}
`
thanks for all your answers.
I'm trying to execute a new contentView this way. What am I missing? I get a force close onClick.
final Button btnStatus = (Button) findViewById(R.id.Status);
btnStatus.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = getIntent();
startActivity(intent);
setContentView(R.layout.newlayout);
}
});
This is just wrong. You can do one of two things here.
Not recommended but could work for what you are doing
Simply using setContentView(R.layout.newlayout) will set the new layout assuming newlayout.xml is a layout in your layout folder
public void onClick(View v)
{
setContentView(R.layout.newlayout);
}
Recommended
Create a new Activity and set the content in it to this new layout and call that Activity in your onClick()
public void onClick(View v)
{
Intent intent = new Intent(CurrentActivityName.this, NextActivityName.class);
startActivity(intent);
}
});
if you want to change layout then try to,
{setContentView(R.layout.newlayout);}
if you want to change activity, then try to intent to forward another activity, and check also to entry of this activity in manifest file in android.
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.
I have made one screen with two images and I would like to add a button lower on the page which will navigate to a second page when I click it. Do you know how to code this? I know how to create a button but I don't know how to connect the two screens!
This task is accomplished with the startActivity(); method using Intents.
Intent i = new Intent(FromActivity.this, ToActivity.class);
startActivity(i);
In this case the Intent uses your current Activity as the Context in the first parameter, and the destination Activity in the second parameter.
Make sure that you add your second Activity to the manifest also (it resides in the tag)!
<activity android:name=".ToActivity"
android:label="#string/app_name">
</activity>
To sum it up:
ImageView myImage = (ImageView) findViewById(R.id.image);
myImage.setOnClickListener(new OnClickListener() {
#Override
onClick(View v) {
Intent intent = new Intent(FromActivity.this, ToActivity.class);
startActivity(intent);
}
}
);
Intent intent = new Intent(currentActivity.this,nextActivity.class);
this.finish();
startActivity(intent);
Button start_button=(Button)findViewById(R.id.btnsend);
start_button.setonClickListener(new onClickListener( ){
#override
onClick(View view){
Intent i = new Intent(MainActivity.this, NewActivity.class);
startActivity(i);
}
}
);
Lets break the answer in two parts, XML & JAVA part as every activity has each of these two. Assuming we are having only two activity, 'Activity1' being the one with the button which would redirect user to 'Activity2'.
As we have 2 activity, we would be having 4 files related for these 2 activity.
XML
so lets first do the easy way, as soon as you open the .xml file of Activity1, you should shift to design tab.
After reaching the design part you can insert a button from pallet, now you can select button which is inside your layout. After selection you could see the properties of button in right section of your screen where you can effectly change multiple properties of the button.
Here you shall find the "onClick" option, fill the box next to it with anything very simple, or something which you can remember. For example enter "nextAct"
or
Hard way would be entering the onClick property manually by typing follwing line in button code in XML
android:onClick="nextAct"
This is all on XML part.
JAVA
Open the .java file of Activity1, here you have to make a new method. This method should be named same as in the "onClick" property of button. Over here i would be taking "nextAct" as that is what i had used in XML. You can place this new method anywhere inside the class of the java file, i prefer keeping it at the end of the class as i could easily locate it if any issue in future.
Now you have to write the body of nextAct method. This can be sumed up in these two lines
public void nextAct(View v){
Intent i = new Intent(this, Activity2.class);
startActivity(i);
}
After this both should be connected and working fine.
give id to your button and mention it in your MainActivity.class.Then you can call OnClickListener to listen to your click.
Button mButton = (Button)findViewById(R.id.buttonid);
mButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//you can use anything in place of i
Intent i = new Intent(MainActivity.this, NextActivity.class);
startActivity(i);
}
});