Android 类似电影倒计时效果（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();
				}
			}
		}
	};
}

2、布局文件

<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>

3、点击 代码下载

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：

这个实现起来就很easy了，我就不发代码了。具体实现就是这样，大家有什么好的方案也说一下。