本组件采用继承系统原有Button实现
效果图：
拖动
释放
自定义Button
package ui;
import android.content.Context;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.MotionEvent;
import android.view.WindowManager;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.ScaleAnimation;
import android.widget.Button;
/**
*
* @author chenxiruanhai
*
*
*/
public class MenuButton extends Button {
private Context mContext;
private WindowManager mWm;
int lastX;
int lastY;
int screenWidth;
int screenHeight;
public MenuButton(Context context, AttributeSet attrs) {
super(context, attrs);
this.mContext = context;
mWm = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics dm = mContext.getResources().getDisplayMetrics();
screenWidth = dm.widthPixels;
screenHeight = dm.heightPixels;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
super.onTouchEvent(event);
measure(0, 0);
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
lastX = (int) event.getRawX();
lastY = (int) event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
int dx = (int) event.getRawX() - lastX;
int dy = (int) event.getRawY() - lastY;
int left = this.getLeft() + dx;
int top = this.getTop() + dy;
int right = this.getRight() + dx;
int bottom = this.getBottom() + dy;
if (left < 0) {
left = 0;
right = left + this.getWidth();
}
if (right > screenWidth) {
right = screenWidth;
left = right - this.getWidth();
}
if (top < 0) {
top = 0;
bottom = top + this.getHeight();
}
if (bottom > screenHeight) {
bottom = screenHeight;
top = bottom - this.getHeight();
}
this.layout(left, top, right, bottom);
lastX = (int) event.getRawX();
lastY = (int) event.getRawY();
lastX = (int) event.getRawX();
lastY = (int) event.getRawY();
break;
case MotionEvent.ACTION_UP:{
Animation alphaAnimation = new AlphaAnimation( 0.5f,1f);
alphaAnimation.setDuration(1000);
//
Animation scaleAnimation = new ScaleAnimation(1.0f, 2.0f,1.0f,2.0f);
scaleAnimation.setDuration(300);
// Animation scaleAnimation2 = new ScaleAnimation(0.1f, 1.0f,0.1f,1.0f);
// scaleAnimation2.setDuration(500);
// // TranslateAnimation translate = new
// TranslateAnimation(0.1f,70.0f,0.1f,0.1f);
// // translate.setDuration(800);
//
Animation scaleAnimation2 = new ScaleAnimation(1.0f, .5f,1.0f,.5f);
scaleAnimation2.setDuration(500);
AnimationSet animationSet = new AnimationSet(true);
animationSet.addAnimation(alphaAnimation);
animationSet.addAnimation(scaleAnimation);
animationSet.addAnimation(scaleAnimation2);
animationSet.setFillAfter(true);
Animation currentAnima = getAnimation();
if(null!=currentAnima) {
currentAnima.cancel();
animationSet.reset();
}
startAnimation(animationSet);
}
break;
}
return true;
}
}
使用
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/shape_panel_background"
android:orientation="vertical"
>
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<openui.XListView
android:id="@+id/listView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="@drawable/line_seperator"
android:dividerHeight="3dip"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:scrollbarStyle="outsideOverlay" >
</openui.XListView>
<openui.MenuButton
android:id="@+id/menu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:background="@drawable/selector_home_menu"
android:text="菜单" />
</FrameLayout>
</LinearLayout>
Activity：
public class MainActivity extends Activity {
public static final String Tag = "MainActivity";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void show(View v){
Toast.makeText(this, "普通按钮点击", Toast.LENGTH_LONG).show();
}
public void myBtnClick(View v){
Toast.makeText(this, "myBtn Click", Toast.LENGTH_LONG).show();
}
}