package com.example.sam.touchdemoprac;

import android.support.v4.widget.TextViewCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private TextView tvMessage;
    private RelativeLayout relativeLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViews();
        // start here:
        this.relativeLayout.setOnTouchListener(new View.OnTouchListener(){
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                StringBuilder sb = new StringBuilder();
                // get (x,y) coordinate:
                String coordinate = String.format("first pointer: (%.1f,%.1f)%n", event.getX(), event.getY() );
                sb.append( coordinate );
                //  get touch state:
                sb.append("touch state: ");
                switch (event.getAction()){
                    case MotionEvent.ACTION_DOWN:
                        sb.append("ACTION_DOWN\n");
                        break;
                    case MotionEvent.ACTION_MOVE:
                        sb.append("ACTION_MOVE\n");
                        break;
                    case MotionEvent.ACTION_UP:
                        sb.append("ACTION_UP\n");
                        break;
                    default:
                        sb.append("\n");
                        break;
                }

                // get total count of touches:
                int pointerCount = event.getPointerCount();
                sb.append("pointer count: " + Integer.toString(pointerCount) + "\n");
                // get each touch's data - ID, axis
                    // this include the first one which we already print out above (just keep in mind; not a big deal)
                for (int i = 0; i < pointerCount; i++){
                    String dataEachTouch = String.format("pointer: %d: (%.1f,%.1f) %n",
                            event.getPointerId(i), event.getY(i), event.getX(i));
                    sb.append(dataEachTouch);
                }

                // put the final result onto the TextView object
                tvMessage.setText(sb);
                return true;
            }
        });
    }

    private void findViews() {
        this.tvMessage = (TextView)findViewById(R.id.tvMessage);
        this.relativeLayout = (RelativeLayout)findViewById(R.id.relativeLayout);
    }
}