ZoroLu

package your.awesome.app;

import android.graphics.Bitmap;
import android.support.v4.util.LruCache;
import com.android.volley.toolbox.ImageLoader.ImageCache;

public class LruBitmapCache extends LruCache<String, Bitmap> implements ImageCache {

	public LruBitmapCache(int maxSize) {
		super(maxSize);

ZoroLu

package your.awesome.app;

import android.graphics.Bitmap;
import android.support.v4.util.LruCache;
import com.android.volley.toolbox.ImageLoader.ImageCache;

public class LruBitmapCache extends LruCache<String, Bitmap> implements ImageCache {

	public LruBitmapCache(int maxSize) {
		super(maxSize);

ZoroLu

第一种: 
Map map = new HashMap(); 
Iterator iter = map.entrySet().iterator(); 
while (iter.hasNext()) { 
    Map.Entry entry = (Map.Entry) iter.next(); 
    Object key = entry.getKey(); 
    Object val = entry.getValue(); 
} 
效率高,以后一定要使用此种方式！ 
第二种: 

ZoroLu

public void makePointCloud(float innerRadius, float outerRadius) {
        if (innerRadius == 0) {
            Log.w(TAG, "Must specify an inner radius");
            return;
        }
        mOuterRadius = outerRadius;
        mPointCloud.clear();
        final float pointAreaRadius =  (outerRadius - innerRadius);
        final float ds = (2.0f * PI * innerRadius / INNER_POINTS);
        final int bands = (int) Math.round(pointAreaRadius / ds);

ZoroLu

private void setBrightness( int barValue) {
        int birghtness = barValue + MIN_BRIGHTNESS;
        LayoutParams lp = getWindow().getAttributes();
        lp. screenBrightness = (birghtness / 255.0F); // 预览亮度, 一个浮点数0-1
        getWindow().setAttributes(lp);
        Settings.System. putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS , birghtness);// brightness设置屏幕亮度，值为30-255
    }


  //  <uses-permission android:name="android.permission.WRITE_SETTINGS" />

ZoroLu

   String status = Environment.getExternalStorageState();
   if(status.equals(Environment.MEDIA_MOUNTED))
    {
      filePath =  sdcardDir + "/" + filename + ".jpg";
      Intent getImageByCamera = new Intent("android.media.action.IMAGE_CAPTURE");
      //得到的filePath这个路径的文件图片没有被压缩,使用是直接根据路径filePath获得这个文件
      getImageByCamera.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(filePath)));
      startActivityForResult(getImageByCamera,RESULT_OK_CAMERA);
    }
    else

ZoroLu

 //把图片文件按比例生产高度为240的btimap
 BitmapFactory.Options options = new BitmapFactory.Options(); 
 options.inJustDecodeBounds =true;
 bmp = BitmapFactory.decodeFile(filePath, options );
 options.inJustDecodeBounds =false;
 int be = (int)(options.outHeight/ (float)240);
 if(be <= 0)
      be = 1;
 options.inSampleSize = be;
 bmp=BitmapFactory.decodeFile(filePath,options);

ZoroLu

private void choosePic()
	{
		final CharSequence[] items = {"拍照上传", "从相册上传", "取消"};
		
		AlertDialog dialog = new AlertDialog.Builder(this)
		.setTitle("添加相片")
		.setItems(items, new DialogInterface.OnClickListener() {
			
			@Override
			public void onClick(DialogInterface dialog, int item) {

ZoroLu

/* user-defined TabHost,remenber in you layout use full-name for you tabhost such as com.gng.view.MyTabHost,
you need to write you class extends TabHost,
and override the method setCurrentTab() ,
in this method you can use you own animation to change activity
*/

//this is my setCurrentTab

@Override
	public void setCurrentTab(int index) 

ZoroLu

NotificationManager notificationManager = 
                          (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(icon,title,when);
Intent openIntent = new Intent(this, MyNotificationActivity);
PendingIntent pIntent = PendingIntent.getActivity(this,0,openIntent,0);
notification.setLatesEventInfo(this, "标题", "内容", pIntent);
notificationManager.notify(0,notification);