Android按钮第一次和第二次点击

Question

I need help with button first and second click. first click should send an sms and changing button background color and button text color. Second click should send an other sms and set back button backcolor and text color. thanks.

public boolean onLongClick(View v) {
    switch (v.getId()){
        case R.id.button1:
            btn1.setBackgroundColor(Color.GREEN);
            btn1.setTextColor(Color.RED);
            sendSMSMessage1();

            // On second click do other event 

            sendSMSMessage11();
            btn1.setBackgroundColor(Color.BLACK);
            btn1.setTextColor(Color.WHITE);

            break;
        case R.id.button2:
            btn2.setBackgroundColor(Color.GREEN);
            btn2.setTextColor(Color.RED);
            sendSMSMessage2();
            // On second click do other event

            sendSMSMessage22();

            btn2.setBackgroundColor(Color.BLACK);
            btn2.setTextColor(Color.WHITE);

            break;
    }
    return false;
}

xml

<Button
    android:id="@+id/button1"
    style="@style/Widget.Material3.Button.OutlinedButton"
    android:layout_width="214dp"
    android:layout_height="70dp"
    android:layout_centerHorizontal="true"
    android:layout_marginStart="123dp"
    android:layout_marginEnd="124dp"
    android:layout_marginBottom="372dp"
    android:text="START"
    android:textAlignment="center"
    android:textAppearance="@style/TextAppearance.AppCompat.Large"
    android:textColor="#ffffff"
    android:textSize="30sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.521"
    app:layout_constraintStart_toStartOf="parent"
    app:strokeColor="#ffffff"
    app:strokeWidth="5dp" />

Answer 1

You can do it via additional flag. For example

boolean wasButtonClicked = false;

button.setOnLongClickListener {
  if (wasButtonClicked) {
    //action 2
  } else {
    //action1
  }
}

Answer 2

this way did not work.

        case R.id.button1:
            boolean wasButtonClicked = false;
            if (wasButtonClicked) {
                btn1.setBackgroundColor(Color.GREEN);
                btn1.setTextColor(Color.RED);
                sendSMSMessage1();
            }
            else {
                btn1.setBackgroundColor(Color.BLACK);
                btn1.setTextColor(Color.WHITE);
            }
            break;

Answer 3

try this code snippet:

boolean buttonClicked = false; //click track for button 1
boolean buttonClicked2 = false; //click track for button 2

public boolean onLongClick(View v) {
    
    switch (v.getId()){
        case R.id.button1:
            buttonClicked = !buttonClicked;
            if(buttonClicked){
              btn1.setBackgroundColor(Color.GREEN);
              btn1.setTextColor(Color.RED);
              sendSMSMessage1();
            }else{
              sendSMSMessage11();
              btn1.setBackgroundColor(Color.BLACK);
              btn1.setTextColor(Color.WHITE);
            }
            break;
          case R.id.button2:
            buttonClicked2 = !buttonClicked2;
            //do similar stuff
            break;
    }
    return true;
}

also in your xml of your button you may need to add onClick attribute so that it handles your onClick if you have not done by your java code.

<Button
    android:id="@+id/button1"
    style="@style/Widget.Material3.Button.OutlinedButton"
    android:layout_width="214dp"
    android:layout_height="70dp"
    android:layout_centerHorizontal="true"
    android:layout_marginStart="123dp"
    android:layout_marginEnd="124dp"
    android:layout_marginBottom="372dp"
    android:text="START"
    android:textAlignment="center"
    android:textAppearance="@style/TextAppearance.AppCompat.Large"
    android:textColor="#ffffff"
    android:textSize="30sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.521"
    app:layout_constraintStart_toStartOf="parent"
    app:strokeColor="#ffffff"
    //add your onClick android:onClick="onLongClick" //or app:onClick = "onLongClick"  
//one should work as you have mentioned on click not long click in your question
    app:strokeWidth="5dp" />

Answer 4

worked like charm, many thanks all:

boolean buttonClicked = false; //click track for button 1 boolean buttonClicked2 = false; //click track for button 2

public boolean onLongClick(View v) {

switch (v.getId()){
    case R.id.button1:
        buttonClicked = !buttonClicked;
        if(buttonClicked){
          btn1.setBackgroundColor(Color.GREEN);
          btn1.setTextColor(Color.RED);
          sendSMSMessage1();
        }else{
          sendSMSMessage11();
          btn1.setBackgroundColor(Color.BLACK);
          btn1.setTextColor(Color.WHITE);
        }
        break;
      case R.id.button2:
        buttonClicked2 = !buttonClicked2;
        //do similar stuff
        break;
}
return true;

}