What does top, left, right and bottom mean in Android Rect object

android android-canvas android-view android-shape
Hunsu picture Hunsu · Mar 23, 2014 · Viewed 35.6k times · Source

I have an Android project where I should make Apples fall. The apples are painted in a Rect. So I created a function that change the Rect position and repaint. Here's my function :

private void updateApplesPosition() {
    for(Rect rect:fallingDownFruitsList)
        rect.set(rect.left, rect.top +10, rect.right, rect.bottom +10);
}

I have a problem : the Apples don't fall but go from right to left. To make the apples fall I changed the code by this :

private void updateApplesPosition() {
    for(Rect rect:fallingDownFruitsList)
        rect.set(rect.left+10, rect.top, rect.right+10, rect.bottom);
}

Answer

LOG_TAG picture LOG_TAG · Oct 8, 2014

This image will explain you in detail:

enter image description here

left The X coordinate of the left side of the rectangle

top The Y coordinate of the top of the rectangle

right The X coordinate of the right side of the rectangle

bottom The Y coordinate of the bottom of the rectangle

enter image description here

Related questions

Android : Draw Circle With Text Inside

I need to draw three circles in my fragment ,the circles differ in size, I refer this link The result i obtained is this This is my XML Code : UPDATED <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="…

Read More
Using clipRect - explanation

public class POCII extends Activity { myView mv = new myView(this); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(mv); } } class myView extends View { public myView(Context context) { super(context); } @Override public void onDraw(Canvas canvas) { Paint paint = new …

Read More
Android View inflateException

I'm trying to create a custom view - finger paint, and I'm having trouble with this error and I don't know how to fix it. Can anybody tell me what is wrong? LogCat: 08-04 08:34:01.171: E/AndroidRuntime(15664): java.lang.RuntimeException: Unable …

Read More