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_cen补充：移动开发 , Android ,
