我正在创建一个应用程序，我想将图像发送到Web Server。因为我正在使用相机和图库intent。现在我想要的是获取用户选择的图像的路径，以便我可以上传到服务器。现在我怎么能得到路径???
代码
if (userSelection.equals("Gallery")) {
intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, 0);
btChooseDoc.setText("Choose File");
}
if (userSelection.equals("Camera")) {
intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 1);
btChooseDoc.setText("Choose File");
}
if (userSelection.equals("Other")) {
intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("file/*");
startActivityForResult(intent, 2);
btChooseDoc.setText("Choose File");
}
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Bitmap camera;
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
if (requestCode == 1 && resultCode == getActivity().RESULT_OK) {
camera = (Bitmap) data.getExtras().get("data");
camera.compress(Bitmap.CompressFormat.JPEG, 60, bytes);
galleryImage = Bitmap.createScaledBitmap(galleryImage, 150, 150, false);
image.setImageBitmap(camera);
}
if (requestCode == 0 && resultCode == getActivity().RESULT_OK) {
galleryUri = data.getData();
try {
galleryImage = decodeUri(getActivity(), galleryUri);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
galleryImage.compress(Bitmap.CompressFormat.JPEG, 60, bytes);
galleryImage = Bitmap.createScaledBitmap(galleryImage, 150, 150, false);
image.setImageBitmap(galleryImage);
}
}
答案 0 :(得分：0)
您好，您可以尝试使用以下代码从库中获取所选图像的路径..
打开图库...
private static int RESULT_LOAD_IMAGE = 1; //variable declared globally
ButtonClickListener() 上的
活动结果： Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
if(data != null){
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = context.getContentResolver().query(selectedImage,filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex); //path of image...
cursor.close();
}
答案 1 :(得分：0)
请尝试这种方式，希望这有助于您解决问题。
<强> activity_main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="@+id/select_photo"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Gallery"/>
<Button
android:id="@+id/take_photo"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Camera"/>
</LinearLayout>
</LinearLayout>
<强> MainActivty.java
public class MainActivty extends Activity {
private static final int CAMERA_REQUEST = 1;
private static final int RESULT_LOAD_IMAGE = 2;
Button camera;
Button gallery;
ImageView imageView;
private String imgPath;
protected void onCreate(Bundle paramBundle) {
super.onCreate(paramBundle);
setContentView(R.layout.launcher);
gallery = (Button) findViewById(R.id.select_photo);
camera = (Button) findViewById(R.id.take_photo);
imageView = (ImageView) findViewById(R.id.imageView);
gallery.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, ""), RESULT_LOAD_IMAGE);
}
});
camera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());
startActivityForResult(intent, CAMERA_REQUEST);
}
});
}
public Uri setImageUri() {
// Store image in dcim
File file = new File(Environment.getExternalStorageDirectory() + "/DCIM/", "image" + new Date().getTime() + ".png");
Uri imgUri = Uri.fromFile(file);
this.imgPath = file.getAbsolutePath();
return imgUri;
}
public String getImagePath() {
return imgPath;
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == RESULT_LOAD_IMAGE) {
String imagePath = getAbsolutePath(data.getData());
imageView.setImageBitmap(decodeFile(imagepath));
// use imagePath to upload image on server
} else if (requestCode == CAMERA_REQUEST) {
String imagePath = getImagePath();
imageView.setImageBitmap(decodeFile(imagePath));
// use imagePath to upload image on server
}
}
}
public String getAbsolutePath(Uri uri) {
if(Build.VERSION.SDK_INT >= 19){
String id = uri.getLastPathSegment().split(":")[1];
final String[] imageColumns = {MediaStore.Images.Media.DATA };
final String imageOrderBy = null;
Uri tempUri = getUri();
Cursor imageCursor = getContentResolver().query(tempUri, imageColumns,
MediaStore.Images.Media._ID + "="+id, null, imageOrderBy);
if (imageCursor.moveToFirst()) {
return imageCursor.getString(imageCursor.getColumnIndex(MediaStore.Images.Media.DATA));
}else{
return null;
}
}else{
String[] projection = { MediaStore.MediaColumns.DATA };
Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
if (cursor != null) {
int column_index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} else
return null;
}
}
private Uri getUri() {
String state = Environment.getExternalStorageState();
if(!state.equalsIgnoreCase(Environment.MEDIA_MOUNTED))
return MediaStore.Images.Media.INTERNAL_CONTENT_URI;
return MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
}
public Bitmap decodeFile(String path) {
try {
// Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeFile(path, o);
// The new size we want to scale to
final int REQUIRED_SIZE = 1024;
// Find the correct scale value. It should be the power of 2.
int scale = 1;
while (o.outWidth / scale / 2 >= REQUIRED_SIZE && o.outHeight / scale / 2 >= REQUIRED_SIZE)
scale *= 2;
// Decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
return BitmapFactory.decodeFile(path, o2);
} catch (Throwable e) {
e.printStackTrace();
}
return null;
}
}
注意：请不要忘记AndroidManifest.xml中的此权限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />