Android 相仿电影倒计时效果（两种随你选）

    最近项目用到了这个功能，就实现了一下。有需要的朋友可以作为参考看一下，还是一个demo，如果添加到自己的项目中，最好改动美化一下。

    先说一下第一种，也是个人倾向的一中，是用Activity加并设置style为Theme.Dialog。这样做是为了看起来悬浮在上面。效果如下：

     思路：主要就是利用动画来实现的，让指针图片不停的旋转，形成像电影倒计时效果。

     代码：

    1、Activity

import java.util.Timer;import java.util.TimerTask;import android.annotation.SuppressLint;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.view.animation.Animation;import android.view.animation.RotateAnimation;import android.widget.Button;import android.widget.ImageView;import android.widget.TextView;public class Test extends Activity {	private long mlCount = 50;	private long mCount = 0; 	TextView tvTime;	private Button startbuttondaoji;	private Timer timer = null;	private TimerTask task = null;	private Handler handler = null;	private Message msg = null;	private ImageView min_progress, min_progress_hand;	Animation rotateAnimation;	float predegree = 0;	boolean okclear = false;	@SuppressLint("HandlerLeak")	@Override	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		init();	}	private void init() {		setContentView(R.layout.test);		tvTime = (TextView) findViewById(R.id.duocitvTime);		startbuttondaoji = (Button) findViewById(R.id.startbuttonduoci);		min_progress = (ImageView) this.findViewById(R.id.duocimin_progress);		min_progress_hand = (ImageView) this				.findViewById(R.id.duocimin_progress_hand);		tvTime.setText("4");		SaveRun.setisjishi(false);		handler = new Handler() {			@Override			public void handleMessage(Message msg) {				switch (msg.what) {				case 1:					if(mlCount>1){						mlCount--;						mCount++;					}else{						break;					}										int totalSec = 0;					totalSec = (int) (mlCount / 10);											int sec = (totalSec % 60);					try {						rotateAnimation = new RotateAnimation(predegree,								(float) (36 * mCount),								Animation.RELATIVE_TO_SELF, 0.5f,								Animation.RELATIVE_TO_SELF, 0.5f);						rotateAnimation.setDuration(100);						rotateAnimation.setFillAfter(false);						min_progress_hand.startAnimation(rotateAnimation);						min_progress.startAnimation(rotateAnimation);						tvTime.setText(String.format("%1$2d", 								sec));						predegree = (float) (36 * mCount);					} catch (Exception e) {						tvTime.setText(  sec +"");						e.printStackTrace();					}					break;				default:					break;				}				super.handleMessage(msg);			}		};	}	@Override	protected void onStart() {		star();		super.onStart();	}	private void star() {		startbuttondaoji.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View arg0) {				startbuttondaoji.setVisibility(View.GONE);				if (null == timer) {					if (null == task) {						SaveRun.setisjishi(true);						okclear = false;						min_progress.setVisibility(View.VISIBLE);						task = new TimerTask() {							@Override							public void run() {								if (null == msg) {									msg = new Message();								} else {									msg = Message.obtain();								}								msg.what = 1;								handler.sendMessage(msg);							}						};					}					timer = new Timer(true);					timer.schedule(task, 100, 100);				}			}		});	}	View.OnClickListener startPauseListener = new View.OnClickListener() {		@Override		public void onClick(View v) {			if (null == timer) {				if (null == task) {					SaveRun.setisjishi(true);					okclear = false;					min_progress.setVisibility(View.VISIBLE);					task = new TimerTask() {						@Override						public void run() {							if (null == msg) {								msg = new Message();							} else {								msg = Message.obtain();							}							msg.what = 1;							handler.sendMessage(msg);						}					};				}				timer = new Timer(true);				timer.schedule(task, 100, 100);			} else {				try {					SaveRun.setisjishi(false);					okclear = true;					task.cancel();					task = null;					timer.cancel();					timer.purge();					timer = null;					handler.removeMessages(msg.what);				} catch (Exception e) {					e.printStackTrace();				}			}		}	};}

<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:background="@android:color/background_dark" >    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_above="@+id/buttonlinear" >        <ImageView            android:id="@+id/duocimin_dial"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:src="@drawable/iv_bg" />        <ImageView            android:id="@+id/duocimin_progress"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:src="@drawable/min_progress"            android:visibility="invisible" />        <ImageView            android:id="@+id/duocimin_progress_hand"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:src="@drawable/min_progress_hand" />        <TextView            android:id="@+id/duocitvTime"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:text="00:00.0"            android:textSize="35sp"            android:textStyle="bold" />        <LinearLayout            android:id="@+id/duocihoursoflinear"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_above="@+id/duocitvTime"            android:layout_centerHorizontal="true"            android:gravity="center"            android:orientation="horizontal"            android:visibility="invisible" >                    </LinearLayout>        <LinearLayout            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_alignBottom="@+id/duocimin_dial"            android:gravity="center_horizontal"            android:orientation="horizontal" >            <RelativeLayout                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginRight="100sp" >            </RelativeLayout>            <RelativeLayout                android:layout_width="wrap_content"                android:layout_height="wrap_content" >            </RelativeLayout>        </LinearLayout>    </RelativeLayout>    <RelativeLayout        android:id="@+id/buttonlinear"        android:layout_width="match_parent"        android:layout_height="74sp"        android:layout_alignParentBottom="true"        android:background="@drawable/v5_bottom_bar_bg_light" >        <Button            android:id="@+id/startbuttonduoci"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:layout_marginLeft="10sp"            android:layout_marginRight="10sp"            android:background="@drawable/startback"            android:text="开     始" />    </RelativeLayout></RelativeLayout>

二、第二个方案使用数字变换方式的，实现起来比较简单，就是图片的轮换播放，思路就是这样，上图：