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I want to create a checkbox when button is clicked

I want to make it so that every time someone types something in the editText and clicks the button, the text comes up. It does it in my code, but I also want to add a checkbox next to it. How can I add the checkbox every time the button is pressed?
This is how it looks in the emulator right now after I typed test in the editText:
https://gyazo.com/6b9a050976ecd2c4b509220263bbdce1
The second problem is: when I write a second todo, it overwrites the last one so right now I can only have 1 todo. Why?
Code:
final TextView textViewPrint;
Button btn_print;
final EditText editTextType;
textViewPrint = findViewById(R.id.print_text);
btn_print = findViewById(R.id.button_add);
editTextType = findViewById(R.id.test_textEdit);
btn_print.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
textViewPrint.setText(editTextType.getText().toString()) ;
editTextType.setText("");
}
});

You can add to your layout programmatically after it has been inflated. Add an id to your LinearLayout:
android:id ="#+id/layout"
Then in OnCreate (after your existing code), get a reference to it and add controls as you wish. And add these lines in OnCreate, For example:
LinearLayout l = (LinearLayout)findViewById(R.id.layout);
CheckBox cb = new CheckBox(this);
int lHeight = LinearLayout.LayoutParams.MATCH_PARENT;
int lWidth = LinearLayout.LayoutParams.WRAP_CONTENT;
l.addView(cb, new LinearLayout.LayoutParams(lHeight, lWidth));
setContentView(l);

First You need add to LinearLayout layout
LinearLayout l = (LinearLayout)findViewById(R.id.layout);
btn_print.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
CheckBox cb = new CheckBox(this);
LayoutParams lparams = new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
cb.setLayoutParams(lparams);
l.addView(cb);
}
});

what is equal to JPanel (Java) in android

If I want add 2 buttons to JFrame in Java with each press on certain button I create JPanel and add this 2 buttons to the Jpanel then add the JPanel to the JFrame
But in android I tried
public class object extends Activity {
ToggleButton togglebutton;
Button button;
public void onCreate(Bundle bundle){
super.onCreate(bundle);
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(LinearLayout.HORIZONTAL);
layout.setWeightSum(100);
LinearLayout.LayoutParams par = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT,30);
LinearLayout.LayoutParams part = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT,70);
togglebutton = new ToggleButton(this);
button = new Button(this);
button.setLayoutParams(par);
button.setLayoutParams(part);
layout.addView(button);
layout.addView(togglebutton);
LinearLayout lay =(LinearLayout)findViewById(R.id.lay);
try {
lay.addView(layout);
}catch(Exception e){
e.printStackTrace();
}
}
}
But didn't work I always get exception with that
What can I do?
Or what is equal to JPanel in Android?

You said nothing about "adding content from one Activity to other" in your initial post and didn't include an a logcat for your exception, but the obvious problem is not calling setContentView while using findViewById.
This code creates the activity you are trying to make.
public class MainActivity extends Activity {
ToggleButton togglebutton;
Button button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LinearLayout rootView = new LinearLayout(this);
rootView.setOrientation(LinearLayout.HORIZONTAL);
rootView.setWeightSum(100);
LinearLayout.LayoutParams par = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT,30);
LinearLayout.LayoutParams part = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT,70);
togglebutton = new ToggleButton(this);
button = new Button(this);
button.setText("Click Me");
button.setLayoutParams(par);
button.setLayoutParams(part);
rootView.addView(button);
rootView.addView(togglebutton);
setContentView(rootView);
}
}

The closest thing to JPanel for android would be the root view of your layout. I think cricket has the right solution and your getting an error beacuse your not setting setContentView(). This will set your root view to the xml layout file specified. For example setContentView(R.layout.main);.

How does setContentView work in android?

I am trying to display a button on my android app but everytime i run the app it crashes. i realise this is because i use setContentView multiple times? I dont understand how it works, and dont understand how i can fix this problem so my button will display. my code is below.
public class MainActivity extends Activity {
Draw draw;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
draw = new Draw(this);
draw.setBackgroundColor(Color.BLUE);
setContentView(draw);
LinearLayout l = new LinearLayout(this);
l.setOrientation(LinearLayout.VERTICAL);
setContentView(l);
l.addView(new Draw(this));
//setContentView(R.layout.activity_main);
setUpBlockBtn();
}
private void setUpBlockBtn(){
setContentView(R.layout.activity_main);
Button addBlockButton = (Button)findViewById(R.id.btnBlock);
addBlockButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.i("DemoButtonApp", "you clicked the button");
//finish();
}
});
}

You try to access Button from android xml layout but you do not set this layout in Activity.
Put you button activity_main.xml and use this button in your activity.
Thanks

You can create one more layout and add Draw and Linear layout to that layout.
Something like this.
LinearLayout l1=new LinearLayout(this);
l1.setOrientation(LinearLayout.VERTICAL);
l1.addView(draw);
l1.addView(l2) // your linearLayout.
setContentView(l1)
Remember you can't use setContentView more than one time.
There should be top layout which includes subview and other layouts and then you can add that layout to your activity.

Android Studio: Button always appears at the front

I have a RelativeLayout to which I add Views.
I added a button to it, and the button always appears in front of all the other Views that are added to it, regardless of the order in which things were added. How come?
I'm coding purely in Java, no XML.
Here's a simple example, the button will appear here in front of the text, even though the text was added last:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
RelativeLayout layout = new RelativeLayout(this);
Button button = new Button(this);
TextView text = new TextView(this);
button.setText("Button");
text.setText("Text");
layout.addView(button);
layout.addView(text);
setContentView(layout);
}

Starting with Lollipop, a StateListAnimator controlling elevation was added to the default Button style. In my experience, this forces buttons to appear above everything else regardless of placement in XML (or programmatic addition in your case). That might be what you're experiencing.
To resolve this you can add a custom StateListAnimator if you need it or simply set it to null if you don't.
XML:
android:stateListAnimator="#null"
Java:
Button button = new Button(this);
button.setText("Button");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
button.setStateListAnimator(null);
}
More details:
Android 5.0 android:elevation Works for View, but not Button?

In the Android 5.0 (API 21) and above, you must add android:elevation into the view.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
RelativeLayout layout = new RelativeLayout(this);
Button button = new Button(this);
TextView text = new TextView(this);
button.setText("Button");
text.setText("Text");
button.setElevation(3.0f); // add this line, you could try with values > 3.0f
layout.addView(button);
layout.addView(text);
setContentView(layout);
}

From android developer docs :
By default, all child views are drawn at the top-left of the layout, so you must define the position of each view using the various layout properties available from RelativeLayout.LayoutParams.
http://developer.android.com/guide/topics/ui/layout/relative.html
Try the following snippet :
RelativeLayout layout = new RelativeLayout(this);
Button button = new Button(this);
TextView text = new TextView(this);
button.setId(View.generateViewId());
text.setId(View.generateViewId());
button.setText("Button");
text.setText("Text");
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.BELOW, text.getId());
button.setLayoutParams(params);
layout.addView(button);
layout.addView(text);

The button appears to float to the forefront of the RelativeLayout it's in so...
Try this:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Button button = new Button(this);
button.setText("Button");
RelativeLayout groupContainingButton = new RelativeLayout(this);
groupContainingButton.addView(button);
TextView text = new TextView(this);
text.setText("Text");
RelativeLayout activityLayout = new RelativeLayout(this);
activityLayout.addView(groupContainingButton);
activityLayout.addView(text);
setContentView(activityLayout);
}

Check the button's state (enabled/disabled):
loginButton.setEnabled(false);

Create a button dynamically within the same layout by clicking on an existing button in android

I want to add a new button to the view by clicking on an existing static button within the same view. And the button should stay there in the view until we manually delete it.
Browsing for help on this for a while and all I can get to is creating dynamic buttons. Hope any of you can help me out in what I am trying to achieve.

On your existing button click listener call this function.
private void addButton(){
LinearLayout layout = (LinearLayout) findViewById(R.id.linear_layout);//create a layout in you content view
layout.setOrientation(LinearLayout.VERTICAL);
Button newButton = new Button(this);
newButton.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
newButton.setText("Button Text");
newButton.setId(1);//some id
layout.addView(row); // add button in layout
}

You must access to layout with findView and add your button to that like this code which located in onCreate function in your activity :
Button staticBtn = (Button)(findViewById(R.id.staticBtnID));
LayoutParam staticBtnLayoutParam = staticBtn.getLayoutParam();
Button btn = new Button(this);
int width = 0; //you can use staticBtnLayoutParam.getWidth(); or .getX(); to get staticBtn parameters and set your param related to that
int height = 0 ;
btn.setLayoutParams(new LayoutParams(width , height));
LinearLayout layout = (LinearLayout)(findViewById(R.id.linearLayoutID));
layout.addView(button);
Best Regards