Java - Android

On touch event

On touch event
Java - Android

Program: przenoszący (po kliknięciu przez użytkownika) obrazek zamieszczony na ekranie po layoucie.

Jak w opisie.

Kompilator: Eclipse

Film:

Kod programu:

Program główny – backend:

package com.example.on_touch_event;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MotionEvent;
import android.widget.ImageView;
import android.widget.RelativeLayout;

public class MainActivity extends Activity {

    public boolean onTouchEvent (MotionEvent event){
    	float wspX=event.getX();
    	float wspY=event.getY();  
    	RelativeLayout.LayoutParams margins= new RelativeLayout.LayoutParams(
        RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
    	margins.setMargins((int)wspX, (int)wspY, 0, 0);
    	imgv.setLayoutParams(margins);
    	return super.onTouchEvent(event);
    } 
    ImageView imgv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);     
        imgv=(ImageView)findViewById(R.id.imgv);        
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}

Layout:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ImageView
        android:id="@+id/imgv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="91dp"
        android:layout_marginTop="64dp"
        android:src="@drawable/ic_launcher"
        android:contentDescription="@string/desc" />

</RelativeLayout>