我一直在尝试从此应用中的图库中获取图像，然后点击按钮，我想上传到我的PHP服务器。
＆＃34; selectedImagePath＆＃34;为什么呢？ 如果有人有解决方案，请帮助我！提前谢谢。
img = (ImageView) findViewById(R.id.ImageView01);
Button browse = (Button) findViewById(R.id.Button01);
browse.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_PICTURE);
}
});
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
selectedImageUri = data.getData();
System.out.println(selectedImageUri);
selectedImagePath = getPath(selectedImageUri);//returns as null
System.out.println("Image Path : " + selectedImagePath);
img.setImageURI(selectedImageUri);
}
}
}
public String getPath(Uri uri) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
答案 0 :(得分：7)
试试这个
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, 0);
}
@Override
protected void onActivityResult(int reqCode, int resCode, Intent data) {
if(resCode == Activity.RESULT_OK && data != null){
String realPath;
// SDK < API11
if (Build.VERSION.SDK_INT < 11) {
realPath = RealPathUtil.getRealPathFromURI_BelowAPI11(this, data.getData());
}
// SDK >= 11 && SDK < 19
else if (Build.VERSION.SDK_INT < 19) {
realPath = RealPathUtil.getRealPathFromURI_API11to18(this, data.getData());
}
// SDK > 19 (Android 4.4)
else {
realPath = RealPathUtil.getRealPathFromURI_API19(this, data.getData());
}
System.out.println("Image Path : " + realPath);
}
}
public class RealPathUtil {
@SuppressLint("NewApi")
public static String getRealPathFromURI_API19(Context context, Uri uri){
String filePath = "";
String wholeID = DocumentsContract.getDocumentId(uri);
String id = wholeID.split(":")[1];
String[] column = { MediaStore.Images.Media.DATA };
// where id is equal to
String sel = MediaStore.Images.Media._ID + "=?";
Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
column, sel, new String[]{ id }, null);
int columnIndex = cursor.getColumnIndex(column[0]);
if (cursor.moveToFirst()) {
filePath = cursor.getString(columnIndex);
}
cursor.close();
return filePath;
}
@SuppressLint("NewApi")
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
String result = null;
CursorLoader cursorLoader = new CursorLoader(
context,
contentUri, proj, null, null, null);
Cursor cursor = cursorLoader.loadInBackground();
if(cursor != null){
int column_index =
cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
result = cursor.getString(column_index);
}
return result;
}
public static String getRealPathFromURI_BelowAPI11(Context context, Uri contentUri){
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index
= cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}
getRealPath类的代码不是我的，我不记下网站。
答案 1 :(得分：0)
获取数据后，首先从该路径创建文件，然后将该文件的路径作为＆＃34; selectedImagePath＆＃34;。然后，您将获得外部存储上的实际图像路径：尝试以下代码：
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
selectedImageUri = data.getData();
File myFile = new File(selectedImageUri);
System.out.println(selectedImageUri);
selectedImagePath = myFile.getPath();
System.out.println("Image Path : " + selectedImagePath);
img.setImageURI(selectedImageUri);
}
}
}
答案 2 :(得分：0)
试试这段代码，
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
System.out.println("Image Path : " + selectedImagePath);
img.setImageURI(selectedImageUri);
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
答案 3 :(得分：0)
尝试以下代码
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri uri = data.getData();
String[] filepath = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(uri, filepath, null,
null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filepath[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
System.out.println("Image Path : " + filePath);
}
答案 4 :(得分：0)
我花了一些时间在这个问题上，最终我找到了完全有效的解决方案（）。
：一种。 它取自 cordova-plugin-camera ，可在此处找到：
public static String getRealPath(final Uri uri, final Context context) {
String realPath = null;
if (Build.VERSION.SDK_INT < 11) {
realPath = FileHelper.getRealPathFromURI_BelowAPI11(context, uri);
// SDK >= 11
} else {
realPath = FileHelper.getRealPathFromURI_API11_And_Above(context, uri);
}
return realPath;
}
[FileHelper.class]中提供了两种方法： https://github.com/apache/cordova-plugin-camera/blob/06d609cfa4871b4a2811f5a8f7f0a822733209b9/src/android/FileHelper.java
我不想复制代码，而是提供链接，因为解决方案非常复杂。 /我认为他们可以过期，但希望他们不会/
<强>乙 以下是示例项目[RealPathUtil.java]源代码的链接：https://github.com/hmkcode/Android/blob/master/android-show-image-and-path/src/com/hmkcode/android/image/RealPathUtil.java
<强>下进行。 这里的另一个问题没有引起太多关注。 [Stack Overflow Post]：https://stackoverflow.com/a/36714242