我在Android应用程序中使用相机拍摄图像。
然后裁剪图像。
在剪裁后将图像保存在指定的文件夹中。
文件夹正在创建,但图片未保存在文件夹中。(空为)
帮我解决一下
我用过的代码,
if (extras != null) {
Bitmap photooutput = extras.getParcelable("data");
// Camera Output
if (pick == 1) {
viewImage.setImageBitmap(photooutput);
String path = Environment.getExternalStorageDirectory().toString();
File m_imgDirectory = new File(path + "/WallPaper/");
if (!m_imgDirectory.exists()) m_imgDirectory.mkdir();
FileOutputStream m_fOut = null;
File directory2 = new File(path);
directory2.delete();
String m_fileid = System.currentTimeMillis() + "";
directory2 = new File(path, "/Wall/" + m_fileid + ".png");
try
{
if (!directory2.exists()) directory2.createNewFile();
m_fOut = new FileOutputStream(directory2);
Bitmap m_bitmap = photooutput.copy(Bitmap.Config.ARGB_8888, true);
m_bitmap.compress(Bitmap.CompressFormat.PNG, 100, m_fOut);
m_fOut.flush();
m_fOut.close();
MediaStore.Images.Media.insertImage(getContentResolver(),
directory2.getAbsolutePath(), directory2.getName(), directory2.getName());
}
catch (Exception p_e)
{
}
}
}
答案 0 :(得分:0)
使用Android KitKat及以上版本时,应用程序无法将文件保存到SD卡上。 请检查此Thread
<强>更新强> 将图像保存到内部存储:
public static Uri saveImage(Bitmap bmp) {
Uri uri = null;
try {
String name = System.currentTimeMillis() + ".jpg";
//you can create a new file name "test.jpg" in sdcard folder.
File f = new File(getImagesDir() + File.separator + name);
f.createNewFile();
//write the bytes in file
FileOutputStream fo = new FileOutputStream(f);
fo.write(bitmapToByteArray(bmp));
// remember close de FileOutput
fo.close();
uri = Uri.parse("file://" + f.getPath());
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return uri;
}
public static String getImagesDir() {
String rootDir = Environment.getExternalStorageDirectory().toString();
rootDir = rootDir + "/MyApp/Media/Images";
// Create directory if not existed
File dir = new File(rootDir);
if (!dir.exists()) {
dir.mkdir();
}
return dir.getPath();
}
public static byte[] bitmapToByteArray(Bitmap bmp) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
return byteArray;
}
更新2:缺少添加的代码
将以下权限添加到AndroidManifest:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>