好久没有写过博客了。前段时间一个项目中用到了浮点（漂浮在窗口上），于是突发灵感发现能够实现类似于腾讯手机管家火箭升空效果
实现步骤：1：新建一个类 名为RocketView(用来显示浮点，当手指拖动浮点变成火箭图标)
2：新建一个类 名LaunchView（火箭发射台，当手指拖动RocketView浮点到指定位置释放手指后 火箭深空）
3：在activity中调用RocketView的显示浮点方法进行演示
4：总结
1：新建一个类 名为RocketView(用来显示浮点，当手指拖动浮点变成火箭图标)
package com.masa.rocketlaunch;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.PixelFormat;
import android.os.Handler;
import android.os.Message;
import android.os.Vibrator;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.TextView;
/**
* author:janecer
* email:jiangxiaocai@youline.com.cn
* 2014年10月22日 下午3:41:59
* 类说明
*/
public class RocketView extends FrameLayout{
private static final String TAG = null;
private static final int ROCKET_SENDING=10;
private static final int ROCKET_SENDED=11;
private static final int VIBRATE=12;
private static final String FLOAT_MARK="float_mark";
private WindowManager wm;
private WindowManager.LayoutParams wlp;
private TextView tv_rocket;
private Context ctx;
private int statusBar;//状态栏高度
private LaunchView launchView;
private float x;
private float y;
//在拖到 发射台发射之前 几下浮点的位置，以便发射完后 把浮点设置到这个位置
private float x_o;
private float y_o;
private float xInScrren;
private float yInScrren;
private Vibrator vibrator;
private boolean isVibrator=false;
private int rocket_height;//火箭的高度
/**
* 手机屏幕的宽度和高度
*/
private int s_width;
private int s_height;
/**
* 推断火箭是否在飞行中。假设在飞行中。避免手指再次出破屏幕
*/
private boolean isFlying=false;
//发射火箭
private Handler handler=new Handler(){
public void handleMessage(android.os.Message msg) {
switch (msg.what) {
case ROCKET_SENDING://发射火箭
updatePosition();
break;
case ROCKET_SENDED://火箭发射完毕
launchView.removeView();
launchView.setBackgroundResource(R.drawable.rocket_base);
isFlying=false;
setImage(false, false);
xInScrren=x_o;
yInScrren=y_o;
updatePosition();
break;
case VIBRATE:
vibrator.vibrate(msg.arg1);
break;
}
};
};
public RocketView(Context context) {
this(context, null);
}
public RocketView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public RocketView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.ctx=context;
//初始化屏幕的宽度和高度
this.s_height=DimensionUtil.getHeight(context);
this.s_width=DimensionUtil.getWidth(context);
//给本布局设置 长度和高度
ViewGroup.LayoutParams vlp=new ViewGroup.LayoutParams(-2,-2);
this.setLayoutParams(vlp);
this.setBackgroundColor(Color.TRANSPARENT);
//初始化状态栏高度
if(context instanceof Activity){
initStatusBar((Activity)context);
}
vibrator=(Vibrator)context.getSystemService(Context.VIBRATOR_SERVICE);
wm=(WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
wlp=new WindowManager.LayoutParams();
//给显示浮点的ImaView初始化
tv_rocket=new TextView(context);
tv_rocket.setGravity(Gravity.CENTER);
FrameLayout.LayoutParams flp=new FrameLayout.LayoutParams(-2,-2);
tv_rocket.setLayoutParams(flp);
setImage(false,false);
this.addView(tv_rocket);
Log.i(TAG, "RocketView:___>");
}
/**
* 设置发射台的window
* @param lv
*/
public void setLaunchView(LaunchView lv){
this.launchView=lv;
}
/**
* 用来设置 图标是火箭图标 还是 圆形图标
* @param isRocket
* @param isRelease true表示 正在深空的火箭
*/
public void setImage(boolean isRocket,boolean isRelease){
if(isRocket){
tv_rocket.setText("");
tv_rocket.setBackgroundResource(isRelease?R.drawable.rocket_release:R.drawable.rocket_unrelease);
}else{
//设置圆形图标
tv_rocket.setBackgroundResource(R.drawable.float_);
tv_rocket.setText(((Util.getUsefoMe(ctx)*100)/Util.getTotalMe())+"%");
}
// wlp.width = -2;
// wlp.height =-2;
// wm.updateViewLayout(this, wlp);
}
public void addToWindow(){
wlp.width = -2;
wlp.height = -2;
wlp.format=PixelFormat.RGBA_8888;
wlp.type=WindowManager.LayoutParams.TYPE_PHONE;
wlp.flags=WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL|WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
wlp.gravity=Gravity.LEFT|Gravity.TOP;
wlp.x=DimensionUtil.getWidth(ctx)/2;
wlp.y=(DimensionUtil.getHeight(ctx)-statusBar)/2;
// wlp.alpha=0.5f;
wm.addView(this,wlp);
}
public void removeViewFromWindow(){
wm.removeView(this);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if(!isFlying){
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
x_o=ev.getRawX();
y_o=ev.getRawY();
this.x=ev.getX();
this.y=ev.getY();
setImage(true,false);
launchView.addToWindow();
break;
case MotionEvent.ACTION_MOVE:
this.xInScrren= ev.getRawX();
this.yInScrren= ev.getRawY();
updatePosition();
//Log.i(TAG,"this.x:"+this.x+" this.y:"+this.y);
if(xInScrren>launchView.x-launchView.r&&xInScrren<launchView.x+launchView.r&&yInScrren>launchView.y-launchView.r&&yInScrren<launchView.y+launchView.r){
//显示须要发射的火焰
Log.i(TAG, "显示发射火焰");
launchView.isShowFire(true);
isVibrator=true;
new Thread(){
public void run() {
while (isVibrator) {
Message msg=Message.obtain();
msg.arg1=(int) Math.round(Math.random() * 100+200);
msg.what=VIBRATE;
handler.sendMessage(msg);
try {
Thread.currentThread().sleep(msg.arg1);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
};
}.start();
}else{
vibrator.cancel();
isVibrator=false;
launchView.isShowFire(false);
}
break;
case MotionEvent.ACTION_UP:
isVibrator=false;
//依据火焰是否显示 决定是否发射火箭
if(launchView.ivfire.getVisibility()==View.VISIBLE){
//发射火箭
Log.i(TAG, "发射火箭逻辑");
launchView.ivfire.setVisibility(View.GONE);
launchView.setBackgroundResource(R.drawable.smoke_m);
setImage(true,true);
isFlying=true;
new Thread(){
public void run() {
int height=tv_rocket.getHeight();
Log.i(TAG, "火箭的高度："+height);
while (yInScrren>0) {
handler.sendEmptyMessage(ROCKET_SENDING);
try {
Thread.currentThread().sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
yInScrren-=2;
}
handler.sendEmptyMessage(ROCKET_SENDED);
};
}.start();
}else{
setImage(false,true);
if(!isFlying){
launchView.removeView();
}
}
break;
}}
return super.onTouchEvent(ev);
}
public void updatePosition(){
wlp.x=(int) (this.xInScrren-this.x);
wlp.y=(int) (this.yInScrren-this.y-statusBar);
wm.updateViewLayout(this,wlp);
}
/**
* 初始化状态栏高度
* @param act
*/
public void initStatusBar(Activity act){
if(act.getWindow().getAttributes().flags==WindowManager.LayoutParams.FLAG_FULLSCREEN){
statusBar=0;
}else{
try {
Class<?> clazz=Class.forName("com.android.internal.R$dimen");
Object obj=clazz.newInstance();
int j = Integer.parseInt(clazz.getField("status_bar_height").get(obj).toString());
statusBar = act.getResources().getDimensionPixelSize(j);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NumberFormatException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchFieldException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
2：新建一个类 名LaunchView（火箭发射台。当手指拖动RocketView浮点到指定位置释放手指后 火箭深空）
package com.masa.rocketlaunch;
import java.text.Format;
import android.content.Context;
import android.graphics.PixelFormat;
import android.os.Handler;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.RelativeLayout;
/**
* author:janecer
* email:jiangxiaocai@youline.com.cn
* 2014年10月23日 下午2:08:55
* 类说明 火箭发射台
*/
public class LaunchView extends RelativeLayout{
private static final String TAG = LaunchView.class.getSimpleName();
private WindowManager wm;
private WindowManager.LayoutParams wlp;
private Context ctx;
public int x;//发射台的x坐标
public int y;//发射台的y坐标
public int r;//待中心点的半径
private Handler handler=new Handler(){
public void handleMessage(android.os.Message msg) {
};
};
public ImageView ivfire;
public LaunchView(Context context) {
this(context, null);
}
public LaunchView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public LaunchView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
ctx=context;
wm=(WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
wlp=new WindowManager.LayoutParams();
ViewGroup.LayoutParams vlp=new ViewGroup.LayoutParams(-1,DimensionUtil.dip2px(context, 108));
this.setLayoutParams(vlp);
this.setBackgroundResource(R.drawable.rocket_base);
ivfire = new ImageView(context);
ivfire.setScaleType(ScaleType.FIT_XY);
setImageFire();
RelativeLayout.LayoutParams rlp=new RelativeLayout.LayoutParams((int) (DimensionUtil.getWidth(context)/4.5)*2,(int) (DimensionUtil.getWidth(context)/4.5));
rlp.addRule(CENTER_IN_PARENT);
this.addView(ivfire, rlp);
r=(int) (DimensionUtil.getWidth(context)/4.5);
x=DimensionUtil.getWidth(context)/2;
y=DimensionUtil.getHeight(context)-r;
Log.i(TAG, "x:"+x+" y:"+y+" r:"+r);
}
public void setImageFire( ){
ivfire.setBackgroundResource(R.drawable.rocket_fire1);
}
public void isShowFire(boolean isshow){
ivfire.setVisibility(isshow?View.VISIBLE:View.GONE);
}
public void addToWindow(){
wlp.flags=WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL|WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
wlp.type=WindowManager.LayoutParams.TYPE_PHONE;
wlp.gravity=Gravity.LEFT|Gravity.TOP;
wlp.format=PixelFormat.RGBA_8888;
wlp.width=this.getLayoutParams().width;
wlp.height=this.getLayoutParams().height;
wlp.x=0;
wlp.y=DimensionUtil.getHeight(ctx);
wm.addView(this,wlp);
}
public void removeView(){
wm.removeView(this);
}
}
3：在activity中调用RocketView的显示浮点方法进行演示
RocketView rocketView=new RocketView(this.getApplicationContext()); rocketView.setLaunchView(new LaunchView(this.getApplicationContext())); rocketView.addToWindow();
4：总结