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[转载]helloPe的android项目实战之连连看—实现篇（三） – HelloPe – 博客园.
前面两篇“实现篇”已经将程序后台框架基本实现了，今天将涉及程序的activity类，在这个类中，为了有一个比较好的视觉效果，将介绍一些 Android中动画效果，依靠animation来实现，以及简单介绍Android中自定义dialog的实现；首先看一下游戏界面运行时的效果图 （程序中图片使用了网上的网友的，仅当学习之用）：
游戏运行时界面 用于显示游戏结果的自定义dialog显示
先看看用于显示程序的activity类中的代码（这里主要是一些调用等，实现的逻辑在前面两篇文章中已经包含了）
package nate.llk;
//包得导入略去
public class GameActivity extends Activity implements OnToolsChangeListener,OnTimerListener,
OnStateListener{
private ImageButton img_startPlay;
private ImageView img_title;
private ProgressBar progress;
private MyDialog dialog;
//visibility at first is "gone"
private ImageView clock;
private GameView gameView = null;
private ImageButton img_tip;
private ImageButton img_refresh;
private TextView text_refreshNum;
private TextView text_tipNum;
//两个帮助按键的特效
private Animation anim = null;
private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch(msg.what){
case 0:
dialog = new MyDialog(GameActivity.this,gameView,"完成！",gameView.getTotalTime() - progress.getProgress() + 1);
dialog.show();
break;
case 1:
dialog = new MyDialog(GameActivity.this,gameView,"失败！",gameView.getTotalTime() - progress.getProgress() + 1);
dialog.show();
}
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.game_view);
anim = AnimationUtils.loadAnimation(this, R.anim.shake);
findView();
startView();
img_startPlay.setOnClickListener(new BtnClickListener());
gameView.setOnTimerListener(this);
gameView.setOnStateChangeListener(this);
gameView.setOnToolsChangedListener(this);
img_refresh.setOnClickListener(new BtnClickListener());
img_tip.setOnClickListener(new BtnClickListener());
}//end of the OnCreate method!
/**
* 寻找对应资源控件
*/
public void findView(){
clock = (ImageView)this.findViewById(R.id.clock);
progress = (ProgressBar)this.findViewById(R.id.timer);
img_title = (ImageView)this.findViewById(R.id.title_img);
img_startPlay = (ImageButton)this.findViewById(R.id.play_btn);
img_tip = (ImageButton)this.findViewById(R.id.tip_btn);
img_refresh = (ImageButton)this.findViewById(R.id.refresh_btn);
gameView = (GameView)this.findViewById(R.id.game_view);
text_refreshNum = (TextView)this.findViewById(R.id.text_refresh_num);
text_tipNum = (TextView)this.findViewById(R.id.text_tip_num);
}
/**
* 程序开启界面显示
*/
public void startView(){
Animation scale = AnimationUtils.loadAnimation(this,R.anim.scale_anim);
img_title.startAnimation(scale);
img_startPlay.startAnimation(scale);
}
/**
* 游戏运行时界面显示,即连连看的布局
*/
public void playingView(){
Animation scaleOut = AnimationUtils.loadAnimation(this, R.anim.scale_anim_out);
img_title.startAnimation(scaleOut);
img_startPlay.startAnimation(scaleOut);
img_title.setVisibility(View.GONE);
img_startPlay.setVisibility(View.GONE);
clock.setVisibility(View.VISIBLE);
progress.setMax(gameView.getTotalTime());
progress.setProgress(gameView.getTotalTime());
progress.setVisibility(View.VISIBLE);
gameView.setVisibility(View.VISIBLE);
img_tip.setVisibility(View.VISIBLE);
img_refresh.setVisibility(View.VISIBLE);
text_tipNum.setVisibility(View.VISIBLE);
text_refreshNum.setVisibility(View.VISIBLE);
Animation animIn = AnimationUtils.loadAnimation(this, R.anim.trans_in);
gameView.startAnimation(animIn);
img_tip.startAnimation(animIn);
img_refresh.startAnimation(animIn);
text_tipNum.startAnimation(animIn);
text_refreshNum.startAnimation(animIn);
//player.pause();
gameView.startPlay();
toast();
}
/**
* 一个处理开始游戏，刷新，帮助三个按钮的listener的类
* @author HelloPe || NatePan
*
*/
class BtnClickListener implements OnClickListener{
@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.play_btn:
playingView();
break;
case R.id.refresh_btn:
img_refresh.startAnimation(anim);
gameView.refreshChange();
gameView.invalidate();
break;
case R.id.tip_btn:
img_tip.startAnimation(anim);
gameView.autoHelp();
break;
}
}
}
@Override
public void onRefreshChanged(int count) {
text_refreshNum.setText(""+gameView.getRefreshNum());
}
@Override
public void onTipChanged(int count) {
text_tipNum.setText("" + gameView.getTipNum());
}
@Override
public void onTimer(int leftTime) {
progress.setProgress(leftTime);
}
/**
*用来控制音乐的播放
*/
@Override
public void OnStateChanged(int StateMode) {
switch(StateMode){
case GameView.WIN:
handler.sendEmptyMessage(0);
break;
case GameView.LOSE:
handler.sendEmptyMessage(1);
break;
case GameView.PAUSE:
//player.stop();
//gameView.player.stop();
gameView.stopTimer();
break;
case GameView.QUIT:
//player.release();
//gameView.player.release();
gameView.stopTimer();
break;
}
}
public void quit(){
this.finish();
}
/**
* 用于提醒游戏开始，提醒总时间
*/
public void toast(){
Toast.makeText(this, "游戏已经开始!总时间： " + gameView.getTotalTime() + "s", Toast.LENGTH_LONG).show();
}
@Override
protected void onPause() {
super.onPause();
gameView.setMode(GameView.PAUSE);
}
@Override
protected void onDestroy() {
super.onDestroy();
gameView.setMode(GameView.QUIT);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(Menu.NONE, 1, Menu.NONE,"Replay").setIcon(R.drawable.buttons_replay);
menu.add(Menu.NONE, 2, Menu.NONE, "Pause").setIcon(R.drawable.pause);
menu.add(Menu.NONE, 3, Menu.NONE,"SoundOn").setIcon(R.drawable.volume);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()){
case 1:
gameView.setTotalTime(100);
progress.setMax(100);
gameView.startPlay();
break;
case 2:
gameView.stopTimer();
if(item.getTitle().equals("Pause")){
item.setTitle("Continue");
item.setIcon(R.drawable.play);
}else if(item.getTitle().equals("Continue")){
item.setTitle("Pause");
item.setIcon(R.drawable.pause);
}
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setIcon(R.drawable.icon);
dialog.setTitle("继续");
dialog.setMessage("继续游戏?");
dialog.setPositiveButton("继续", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
gameView.setContinue();
}
}).setNeutralButton("重玩", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
gameView.startPlay();
}
}).setNegativeButton("退出", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent startMain = new Intent(Intent.ACTION_MAIN);
startMain.addCategory(Intent.CATEGORY_HOME);
startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(startMain);
System.exit(0);
}
});
dialog.show();
break;
case 3:
///////////////////////////
if(item.getTitle().equals("Mute")){
item.setTitle("SoundOn");
item.setIcon(R.drawable.volume);
}else if(item.getTitle().equals("SoundOn")){
item.setTitle("Mute");
item.setIcon(R.drawable.mute);
}
break;
}
return super.onOptionsItemSelected(item);
}
/**
* 监听后退按钮,以防止误按，按下back按钮后，程序应当处于暂停状态
*/
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode == KeyEvent.KEYCODE_BACK){
AlertDialog.Builder dialog= new AlertDialog.Builder(GameActivity.this).setTitle("退出游戏")
.setMessage("确定退出游戏？")
.setPositiveButton("是",new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
Intent startMain = new Intent(Intent.ACTION_MAIN);
startMain.addCategory(Intent.CATEGORY_HOME);
startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(startMain);
System.exit(0);
}
}).setNegativeButton("否", new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(GameActivity.this, "重新开始了游戏", Toast.LENGTH_LONG).show();
gameView.startPlay();
}
});
dialog.setIcon(R.drawable.icon);
dialog.show();
}
return super.onKeyDown(keyCode, event);
}
}
在此类中，如上次我们所说的，我们实现了之前定义的三个接口，引用了GameView类（在activity的布局文件中使用到），在activity布局文件中如下使用：
<nate.llk.view.GameView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/game_view" android:visibility="gone" android:layout_below="@id/timer" />
同样对于我们自定义的dialog，跟自定义的GameView（继承自View）是一样的。MyDialog类继承自Dialog类，实现了OnClickListener的OnClick方法，使用一个布局文件，将自定义的dialog布局。布局文件很简单，MyDialog类如下：
public class MyDialog extends Dialog implements OnClickListener{
private GameView gameview;
private Context context;
public MyDialog(Context context, GameView gameview, String msg, int time) {
super(context,R.style.dialog);
this.gameview = gameview;
this.context = context;
this.setContentView(R.layout.dialog_view);
TextView text_msg = (TextView) findViewById(R.id.text_message);
TextView text_time = (TextView) findViewById(R.id.text_time);
ImageButton btn_menu = (ImageButton) findViewById(R.id.menu_imgbtn);
ImageButton btn_next = (ImageButton) findViewById(R.id.next_imgbtn);
ImageButton btn_replay = (ImageButton) findViewById(R.id.replay_imgbtn);
text_msg.setText(msg);
text_time.setText(text_time.getText().toString().replace("$", String.valueOf(time)));
btn_menu.setOnClickListener(this);
btn_next.setOnClickListener(this);
btn_replay.setOnClickListener(this);
this.setCancelable(false);
}
@Override
public void onClick(View v) {
this.dismiss();
switch(v.getId()){
case R.id.menu_imgbtn:
Dialog dialog = new AlertDialog.Builder(context)
.setIcon(R.drawable.buttons_bg20)
.setTitle(R.string.quit)
.setMessage(R.string.sure_quit)
.setPositiveButton(R.string.alert_dialog_ok, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
((GameActivity)context).quit();
}
})
.setNegativeButton(R.string.alert_dialog_cancel, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
gameview.startPlay();
}
})
.create();
dialog.show();
break;
case R.id.replay_imgbtn:
gameview.startPlay();
break;
case R.id.next_imgbtn:
gameview.startNextPlay();
break;
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode == KeyEvent.KEYCODE_BACK){
this.dismiss();
}
return super.onKeyDown(keyCode, event);
}
}
上面代码简单，不过还是实现了较好的效果。
在android中使用animation的动画包含四种，Tween animation的使用也能够使程序看起来效果好点：
在anim文件下：
实现当点击程序中两个工具按钮时，工具按钮出现抖动的效果：
<?xml version="1.0" encoding="utf-8"?> <translate xmlns:android="http://schemas.android.com/apk/res/android" android:fromXDelta="0" android:toXDelta="10" android:duration="1000" android:interpolator="@anim/cycle" />
用于控制欢迎界面的图标逐渐变大的出场效果：
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<scale
android:interpolator="@android:anim/accelerate_decelerate_interpolator"
android:fromXScale="0.0"
android:toXScale="1.0"
android:fromYScale="0.0"
android:toYScale="1.0"
android:pivotX="50%"
android:pivotY="50%"
android:fillAfter="true"
android:duration="1600" />
</set>
当然放大效果只是改一下android:fromXScale=”1.0″ 与 android:toXScale=”0.0″即可；
至于透明效果，用于将GameView中的内容从透明慢慢展示出来：
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="1000" /> </set>
而在activity中对于以上资源的使用上面activity类中已经给出，先载入，然后调用imageView或者其他View的startAnimation方法即可；
对于游戏中音效的播放方法比较简单，主要是在不同的状态播放不同的声音比较繁琐，android中有两种播放音效的方法：一种是SoundPool，一种是MediaPlayer。SoundPool适合短促音乐，但是反应速度要求比较高的情况；MediaPlayer则是是相反。使用步骤如：
// 初始化soundPool 对象,第一个参数是允许有多少个声音流同时播放,第2个参数是声音类型,第三个参数是声音的品质 soundPool = new SoundPool(25, AudioManager.STREAM_MUSIC, 100);//SoudPool的引用 soundPool.load(context, raw, 1);//调用load函数载入音乐资源 //之后调用play函数即可播放参数中相应的音乐资源
本程序算是完成了，向网友们学习了不少，毕竟是很多人都做过的小项目。记录下来，希望高手路过别喷~
