您好我想用我已经保存在我的SQLite数据库的路径改变我的ImageView的形象。那么我想实现的就是这个运行每秒每当图像可以将显示并保持，直到下一个图像将可用。但是，将使用默认的图像，每当有没有显示在所有。但现在我想解决的主要问题是，我不能用我的路径设置ImageView的。我尝试了不同的解决方案，比如做一个位图从该路径，但仍收到相同的错误是： E / BitmapFactory：无法取消code流：java.io.FileNotFoundException：到/ mnt / SD卡/回声/图片/ Awesome4 - 00：01.jpg：打开失败：ENOENT（没有这样的文件或目录）

下面是我的code截至目前：

 字符串路径= db.getImagePath（FILE_NAME，CURTIME）;

                            Log.v（你的图像文件名，FILE_NAME）;
                            Log.v（你currentPosition，CURTIME）;

                            Log.v（您所在位置播放编辑，路径）;

                            尝试{
                                $p$pview.setImageURI(Uri.parse(Environment.getExternalStorageDirectory()+"/Echo/Images/"+file_name));
                            }赶上（例外五）{
                                e.printStackTrace（）;
                                preview.setImageResource（R.drawable.sample_image）;
                            }
 

这下运行，可运行的方法。而这里是我得到的logcat的：

  V /您所在位置：到/ mnt / SD卡/回声/图片/
V /你的图像文件名：Awe​​some4  -  00：01.jpg
V /你currentPosition 11:00:01
V /你的路径回放编辑：到/ mnt / SD卡/回声/图片/
E / BitmapFactory：无法取消code流：java.io.FileNotFoundException：到/ mnt / SD卡/回声/图片/ Awesome4  -  00：01.jpg：打开失败：ENOENT（没有这样的文件或目录）
我/的System.out：resolveUri没有坏的位图URI：到/ mnt / SD卡/回声/图片/ Awesome4  -  00：01.jpg
D / dalvikvm：GC_CONCURRENT释放380K，14％免费3067K / 3560K，暂停74ms + 3ms的，总226ms
V /你的图像文件名：Awe​​some4  -  00：02.jpg
V /你currentPosition：00:02
V /你的路径回放编辑：【4月6号至27号：14：07.691 6043：6043 E / BitmapFactory]
 到/ mnt / SD卡/回声/图片/ Awesome4  -  00：02.jpg：打开失败：ENOENT（没有这样的文件或目录）
 

解决方案   

检查这一点，如果它可以帮助你。

这是我要做的事......

 公共最后静态字符串APP_PATH_SD_CARD =/ DesiredSubfolderName /;
公共最后静态字符串APP_THUMBNAIL_PATH_SD_CARD =缩略图;

公共布尔saveImageToExternalStorage（位图图像​​）{
串FULLPATH = Environment.getExternalStorageDirectory（）getAbsolutePath（）+ APP_PATH_SD_CARD + APP_THUMBNAIL_PATH_SD_CARD。

尝试 {
文件DIR =新的文件（完整路径）;
如果（！dir.exists（））{
dir.mkdirs（）;
}

OutputStream的FOUT = NULL;
档案文件=新的文件（FULLPATH，desiredFilename.png）;
file.createNewFile（）;
FOUT =新的FileOutputStream（文件）;

// 100意味着没有COM pression，较低的你走了，越强的COM pression
image.com preSS（Bitmap.Com pressFormat.PNG，100，FOUT）;
fOut.flush（）;
fOut.close（）;

MediaStore.Images.Media.insertImage（context.getContentResolver（），file.getAbsolutePath（），file.getName（），file.getName（））;

返回true;

}赶上（例外五）{
Log.e（saveToExternalStorage（），e.getMessage（））;
返回false;
}
}
 

Hi I wanted to change the image of my ImageView using a path I have saved on my SQLite database. Well what I want to achieve is for this runs per second whenever the image is available it will show and stay until a next image will be available. But will use a default image whenever there is nothing to show at all. But for now the main problem I wanted to solve is that I can't set the imageView using the path I have. I tried different solutions such as making a bitmap out from the path but still receiving the same error which is: E/BitmapFactory: Unable to decode stream: java.io.FileNotFoundException: /mnt/sdcard/Echo/Images/Awesome4 - 00:01.jpg: open failed: ENOENT (No such file or directory)

Here's my code as of now:

String path = db.getImagePath(file_name, curTime);

                            Log.v("Your image filename", file_name);
                            Log.v("Your currentPosition", curTime);

                            Log.v("Your Path Playback edit", path);

                            try{
                                preview.setImageURI(Uri.parse(Environment.getExternalStorageDirectory()+"/Echo/Images/"+file_name));
                            }catch (Exception e){
                                e.printStackTrace();
                                preview.setImageResource(R.drawable.sample_image);
                            }

This runs under a runnable method. and Here's the logcat I get:

V/Your Path: /mnt/sdcard/Echo/Images/
V/Your image filename: Awesome4 - 00:01.jpg
V/Your currentPosition: 00:01
V/Your Path Playback edit: /mnt/sdcard/Echo/Images/
E/BitmapFactory: Unable to decode stream: java.io.FileNotFoundException: /mnt/sdcard/Echo/Images/Awesome4 - 00:01.jpg: open failed: ENOENT (No such file or directory)
I/System.out: resolveUri failed on bad bitmap uri: /mnt/sdcard/Echo/Images/Awesome4 - 00:01.jpg
D/dalvikvm: GC_CONCURRENT freed 380K, 14% free 3067K/3560K, paused 74ms+3ms, total 226ms
V/Your image filename: Awesome4 - 00:02.jpg
V/Your currentPosition: 00:02
V/Your Path Playback edit: [ 06-27 04:14:07.691  6043: 6043 E/BitmapFactory ]
 /mnt/sdcard/Echo/Images/Awesome4 - 00:02.jpg: open failed: ENOENT (No such file or directory)

check this if it helps you.

preview.setImageURI(Uri.parse(Environment.getExternalStorageDirectory().getAbsolutePath()+"/Echo/Images/"+file_name));

that how i do it...

public final static String APP_PATH_SD_CARD = "/DesiredSubfolderName/";
public final static String APP_THUMBNAIL_PATH_SD_CARD = "thumbnails";

public boolean saveImageToExternalStorage(Bitmap image) {
String fullPath = Environment.getExternalStorageDirectory().getAbsolutePath() + APP_PATH_SD_CARD + APP_THUMBNAIL_PATH_SD_CARD;

try {
File dir = new File(fullPath);
if (!dir.exists()) {
dir.mkdirs();
}

OutputStream fOut = null;
File file = new File(fullPath, "desiredFilename.png");
file.createNewFile();
fOut = new FileOutputStream(file);

// 100 means no compression, the lower you go, the stronger the compression
image.compress(Bitmap.CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();

MediaStore.Images.Media.insertImage(context.getContentResolver(), file.getAbsolutePath(), file.getName(), file.getName());

return true;

} catch (Exception e) {
Log.e("saveToExternalStorage()", e.getMessage());
return false;
}
}