andorid 動畫RotateAnimation的使用...

package com.test;
import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.Button;
import android.widget.ImageView;

public class DrawActivity extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
   
    private ImageView img1;

   
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
            
        ImageView btn = (ImageView) findViewById(R.id.img1);
       
       btn.setOnClickListener(this);  
       
    }

    @Override
    public void onClick(View v) {

        Animation anim = null; 

        anim = new RotateAnimation(0.0f,+360.0f); 

        anim.setInterpolator(new AccelerateDecelerateInterpolator()); 

        anim.setDuration(3000); 

        findViewById(R.id.img1).startAnimation(anim);
    }
 
}



說明:建構子有四個:Public Constructors
,我們這次使用的是第二種.

• RotateAnimation(Context context, AttributeSet attrs)

Constructor used when a RotateAnimation is loaded from a resource.

• RotateAnimation(float fromDegrees, float toDegrees)

Constructor to use when building a RotateAnimation from code.

• RotateAnimation(float fromDegrees, float toDegrees, float pivotX, float pivotY)

Constructor to use when building a RotateAnimation from code

• RotateAnimation(float fromDegrees, float toDegrees, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue)

Constructor to use when building a RotateAnimation from code