I have ten Buttons in my XML and want to change the Text of the button that the user clicks on.
I implemented a View.OnClickListener in my Activity and my onClick looked like this:
@Override
public void onClick(View view) {
Button button = (Button) view;
button.setText("X");
}
It did not work. Am I required to create a switch for each Button? Is there no way to use a single code for all buttons?
In your XML you can use the onClick attribute so that they all call the click method.
XML
<Button
android:id="@+id/buttonOne"
...
android:onClick="onButtonClick"/>
<Button
android:id="@+id/buttonTwo"
...
android:onClick="onButtonClick"/>
Activity
public void onButtonClick(View view) {
switch (view.getId()) {
case R.id.buttonOne: { break; }
case R.id.buttonTwo: { break; }
case R.id.buttonThree: { break; }
...
}
}
This way you can save some lines of code. Something else, depending on what functions the buttons on your screen have, you can also use a RecyclerView , which will also save you a lot of code. But this will depend on the function exerted by each button, if they are very different , I believe you to use the same code example, but if they get at the same end , you could use a RecylerView .
For example, if you want to open a screen for each button, you could use RV and depending on the button clicked, return a Bundle to open the corresponding screen, and so on.
My XML
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="button"
android:id="@+id/button"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="button2"
android:id="@+id/button2"
android:layout_below="@+id/button"
android:layout_alignParentStart="true" />
Na Activity
this.button.setOnClickListener(this)
this.button2.setOnClickListener(this)
override fun onClick(v: View?) {
var button = v as Button
button.text = "Clicked!"
}
Implement View.OnClickListener in your Activity, onClick method do
Remember to set the
Button bt = (Button) findViewById (R.id.button); bt.setOnClickListener (this);
Public void onClick (View view) { Button tmp = (Button) findViewById (view.getId ()); tmp.setText ("Funciona");}