Android中图片处理(压缩 显示 保存).doc

packagecom.xikang.android.slimcoach.utils;

importjava.io.ByteArrayOutputStream;
importjava.io.File;
importjava.io.FileNotFoundException;
importjava.io.FileOutputStream;
importjava.io.IOException;

importcom.xikang.android.slimcoach.Conf;

importandroid.app.Activity;
importandroid.content.ContentResolver;
importandroid.database.Cursor;
importandroid.graphics.Bitmap;
importandroid.graphics.BitmapFactory;
importandroid.graphics.BitmapFactory.Options;
importandroid.graphics.Matrix;
importandroid.net.Uri;
importandroid.provider.MediaStore;
importandroid.util.FloatMath;
importandroid.util.Log;
importandroid.widget.ImageView;
importandroid.widget.Toast;

publicclassImageUtils{

privatestaticfinalStringTAG="ImageUtils";

publicstaticvoidloadImage(Activityactivity,ImageViewimageView,Uriuri){
if(Conf.INFO)
Log.i(TAG,"loadImage:localuri="+uri);
if(uri!=null&&!uri.toString().startsWith("content://")){
return;
}
try{
//MediaStore
String[]pojo={MediaStore.Images.Media.DATA};
Cursorcursor=activity.managedQuery(uri,pojo,null,null,null);
if(cursor!=null&&cursor.moveToFirst()){
ContentResolvercr=activity.getContentResolver();
intcolunm_index=cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
Stringpath=cursor.getString(colunm_index);
if(Conf.INFO)
Log.i(TAG,"loadImage:path="+path);

if(path.endsWith(".jpg")||path.endsWith(".png")){
Bitmapbitmap=BitmapFactory.decodeStream(cr
.openInputStream(uri));
//imageView.setImageBitmap(getBitmap(path,100,200));
imageView.setImageBitmap(getCompredBitmap(path));
}else{
Toast.makeText(activity,"Pleaseselectimage...",
Toast.LENGTH_SHORT).show();
}
}
}catch(Exceptione){
e.printStackTrace();
}
}

publicstaticBitmapgetCompredBitmap(StringsrcPath){
returncompressDef(getResizeBitmap(srcPath));
}

/**
*getbitmapcompressedto100kb
*@parambitmap
*@return
*/
publicstaticBitmapgetCompredDefBitmap(Bitmapbitmap){
returngetCompred