android java.io.File.fixSlashes(File.java:185) [英] android java.io.File.fixSlashes(File.java:185)
问题描述
java.lang.NullPointerException
$(java.io.File.fixSlashes
at < init>(File.java:134)
$ b保存图片的函数代码是:
$ p $public static String这个文件夹可以是一个文件夹,一个文件夹,一个文件夹,一个文件夹,一个文件夹,一个文件夹,一个文件夹,一个文件夹。
布尔成功=真;
String file_path = null;
if(!folder.exists()){
success = folder.mkdir();
if(success){
file_path = folder +/ Img_+ System.currentTimeMillis()/ 1000 +.jpg;
}
OutputStream os = null;
尝试{
os = new FileOutputStream(file_path);
bmp.compress(Bitmap.CompressFormat.JPEG,100,os);
} catch(IOException e){
e.printStackTrace();
}
} else {
//在失败时做其他事情
}
意图mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
文件f =新文件(file_path);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
context.sendBroadcast(mediaScanIntent);
返回file_path;
试试这个:
File folder = new File(Environment.getExternalStorageDirectory()。getAbsolutePath()+/ Pictures / MyFolder);
这就是 getExternalStorageDirectory()
code>文件。你需要获得该文件的绝对路径,并连接到/ Pictures / MyFolder
。
I got an error in console crashes & anrs. This error is showing sometimes and I couldn't find where the problem is.
java.lang.NullPointerException
at java.io.File.fixSlashes(File.java:185)
at java.io.File.<init>(File.java:134)
The function code to save picture is:
public static String sharePhoto(Context context, Bitmap bmp) {
File folder = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pictures/Folder");
boolean success = true;
String file_path = null;
if (!folder.exists()) {
success = folder.mkdir();
}
if (success) {
file_path = folder + "/Img_" + System.currentTimeMillis() / 1000 + ".jpg";
}
OutputStream os = null;
try {
os = new FileOutputStream(file_path);
bmp.compress(Bitmap.CompressFormat.JPEG, 100, os);
} catch (IOException e) {
e.printStackTrace();
}
} else {
// Do something else on failure
}
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(file_path);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
context.sendBroadcast(mediaScanIntent);
return file_path;
}
Try this:
File folder = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pictures/MyFolder");
Thing is that getExternalStorageDirectory()
returns File
. You need to get absolute path of that file and concatenate with "/Pictures/MyFolder"
.
这篇关于android java.io.File.fixSlashes(File.java:185)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!