這幾天在接SDK的時(shí)候产雹，發(fā)現(xiàn)好多渠道都需接入閃屏，可是很多家的閃屏不是那么好翁锡，自己就寫了一套蔓挖，使用Android動(dòng)畫來(lái)實(shí)現(xiàn)閃屏，廢話不多說(shuō)直接上代碼馆衔。
先在項(xiàng)目中創(chuàng)建一個(gè)類瘟判，我這里取名就叫 WelcomeActivity
1、實(shí)現(xiàn)代碼:
public class WelcomeActivity extends Activity {
private Handler mHandler = new Handler();
private ImageView splashImageView;
private Bitmap imageViewBitmap = null;
private int orientation;
private LruCache<String, Bitmap> mMemoryCache;
private int screenWidth;
private int screenHeight;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_welcome);
int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
int cacheSize = maxMemory / 8;
mMemoryCache = new LruCache<String, Bitmap>(cacheSize) {
@Override
protected int sizeOf(String key, Bitmap bitmap) {
return bitmap.getByteCount() / 1024;
}
};
splashImageView = (ImageView) findViewById(R.id.splashId);
orientation = getResources().getConfiguration().orientation;
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
imageViewBitmap = getBitmap(R.drawable.letv_gamesdk_logo_port);
} else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
imageViewBitmap = getBitmap(R.drawable.letv_gamesdk_logo_land);
}
loadSplashIn();
}
public void addBitmapToMemoryCache(String key, Bitmap bitmap) {
if (getBitmapFromMemCache(key) == null) {
mMemoryCache.put(key, bitmap);
}
}
public Bitmap getBitmapFromMemCache(String key) {
return mMemoryCache.get(key);
}
public void loadSplashIn() {
AlphaAnimation alphaAnimation_in = new AlphaAnimation(0.0f, 1.0f);
alphaAnimation_in.setDuration(2000);
alphaAnimation_in.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
if (splashImageView != null) {
splashImageView.setImageBitmap(imageViewBitmap);
}
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
loadSplashOut();
}
}, 1500);
}
});
splashImageView.startAnimation(alphaAnimation_in);
}
public Bitmap getBitmap(int id) {
Bitmap bitmap = getBitmapFromMemCache("splash");
if (bitmap != null) {
return bitmap;
}
WindowManager wm = this.getWindowManager();
DisplayMetrics dm = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(dm);
screenWidth = dm.widthPixels;
screenHeight = dm.heightPixels;
bitmap = decodeSampledBitmapFromResource(getResources(), id, screenWidth, screenHeight);
addBitmapToMemoryCache("splash", bitmap);
return bitmap;
}
public void loadSplashOut() {
AlphaAnimation alphaAnimation_out = new AlphaAnimation(1.0f, 0.0f);
alphaAnimation_out.setDuration(1000);
alphaAnimation_out.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
splashImageView.setImageBitmap(null);
Intent intent = new Intent();
intent.setClass(getApplicationContext(), MainActivity.class);
startActivity(intent);
WelcomeActivity.this.finish();
imageViewBitmap.recycle();
imageViewBitmap = null;
}
});
splashImageView.startAnimation(alphaAnimation_out);
}
public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
if (width > height) {
inSampleSize = Math.round((float) height / (float) reqHeight);
} else {
inSampleSize = Math.round((float) width / (float) reqWidth);
}
}
return inSampleSize;
}
public Bitmap decodeSampledBitmapFromResource(Resources res, int resId, int reqWidth, int reqHeight) {
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(res, resId, options);
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
options.inJustDecodeBounds = false;
return BitmapFactory.decodeResource(res, resId, options);
}
}
2角溃、配置文件
<activity android:name="com.xxx.xxx.xxx.WelcomeActivity" //閃屏Activity android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar.Fullscreen" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="com.xxx.xxx.xxx.MainActivity" //自己的Activity android:label="@string/title_activity_game" android:theme="@android:style/Theme.NoTitleBar.Fullscreen" > </activity>
3拷获、配置xml
activity_welcome.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" tools:context="com.qianhuan.yxgsd.leshi.WelcomeActivity" >
<ImageView android:id="@+id/splashId" android:layout_width="fill_parent" android:layout_height="fill_parent" android:contentDescription="@null" />
</RelativeLayout>
`
這樣加上自己的MainActivity，就可以測(cè)試了减细，這樣一個(gè)不錯(cuò)的閃屏界面就出來(lái)了匆瓜，效果杠杠的，親測(cè)！Ｍ灾ā茧妒！
