在我的代码中，用户可以选择“个人资料图片” 用户从图库中选择图片（确定工作）调整大小和裁剪（确定工作） 我有一个问题，分享图片的路径，因为我必须在其他活动中看到该图片 我想保存共享首选项的完整路径，但我有“找不到文件”的错误，但补丁是正确的。
对不起英语 有完整的代码:(当我再次打开这个活动，我有错误）
public class profilo extends Activity{
String nickname;
EditText nick;
ImageView prof;
ImageButton elisse;
AlertDialog.Builder builder;
private static int RESULT_LOAD_IMAGE = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.settings);
//codici relativi alla action bar
ActionBar ab = getActionBar();
ab.setHomeButtonEnabled(true);
ab.setDisplayHomeAsUpEnabled(true);
setTitle("Impostazioni utente");
getActionBar().setIcon(R.drawable.back);
//________________________________
updatePreferencesData();
ImageButton Foto = (ImageButton) findViewById(R.id.imageButton1);
Button salva = (Button) findViewById(R.id.buttonSalva);
Button password = (Button) findViewById(R.id.button1);
elisse= (ImageButton) findViewById(R.id.imageView1);
Switch facebook = (Switch) findViewById(R.id.switch1);
nick = (EditText) findViewById(R.id.editText1);
nickname = "temp";
prof= (ImageView) findViewById(R.id.imageView2);
View.OnClickListener gestore = new View.OnClickListener() {
public void onClick(View view) {
switch(view.getId()){
case R.id.imageButton1: //imposta foto profilo
Intent i = new Intent( Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
break;
case R.id.buttonSalva: //salva il nickname e le altre impostazioni
nickname = nick.getText().toString();
Toast.makeText(getApplicationContext(), "Salvataggio non implementato", Toast.LENGTH_SHORT).show();
System.out.println("il nick name è " +nickname);
break;
case R.id.button1:
Intent intent = new Intent(getApplicationContext(), EditPassword.class);
startActivity(intent);
break;
case R.id.imageView1: //setto al click anche sulla foto del profilo, l'apertura della gallery (o lo zoom?? )
Intent b = new Intent( Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(b, RESULT_LOAD_IMAGE);
break;
}
}
};
Foto.setOnClickListener(gestore);
salva.setOnClickListener(gestore);
password.setOnClickListener(gestore);
elisse.setOnClickListener(gestore);
}
//gestisco la grafica della barra
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
MenuInflater mMenuInflater = getMenuInflater();
mMenuInflater.inflate(R.menu.barra_home, menu);
return true;
}
//gestisco i click sulla barra in alto
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Intent intent = new Intent(this, MenuLoggato.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
/* case R.id.abForwardHoloLight:
Intent intent2 = new Intent(this, SearchActivity.class);
intent2.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent2);
return true; */
default:
return super.onOptionsItemSelected(item);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
// String picturePath contains the path of selected Image
//qui dovrei mandare l'immagine a saverio e poi ritagliarla
SharedPreferences prefs = getSharedPreferences("Preferenze", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
// EditText outputView = (EditText) findViewById(R.id.inputData);
CharSequence textData = picturePath;
if (textData != null) {
editor.putString("path", ""+textData);
editor.commit();
}
//aggiorno le preferenze e prendo la foto
updatePreferencesData();
}
}
//metodo per tagliare l'immagine
public Bitmap getCroppedBitmap(Bitmap bitmap) {
int minore = 0;
//devo trovare il minore fra larghezza ed altezza e setto il raggio con quello
if( bitmap.getWidth()<=bitmap.getHeight()){
minore = bitmap.getWidth();
}else{
minore = bitmap.getHeight();
}
Bitmap output = Bitmap.createBitmap(minore, minore, Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
//final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final Rect rect = new Rect(0, 0, minore, minore);
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
// canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
canvas.drawCircle(minore / 2, minore / 2, minore / 2, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
//Bitmap _bmp = Bitmap.createScaledBitmap(output, 60, 60, false);
//return _bmp;
return output;
}
private void updatePreferencesData(){
// Leggiamo le Preferences
SharedPreferences prefs = getSharedPreferences("Preferenze", Context.MODE_PRIVATE);
// Leggiamo l'informazione associata alla proprietà TEXT_DATA
String textData = prefs.getString("path", "NO");
System.out.println("path:" + textData);
if(textData.equalsIgnoreCase("NO")==false){
try{ Bitmap profilo = BitmapFactory.decodeFile(textData);
profilo = getCroppedBitmap(profilo);
prof.setImageBitmap(profilo);
}catch(Exception e){
System.out.println("errore " +e);
}
}
else{
Toast.makeText(getApplicationContext(), "Modifica la foto con un click", Toast.LENGTH_SHORT).show();
}
}
}
答案 0 :(得分：0)
使用此功能保持您的实用程序类以获取图像路径
*请勿关闭光标
public static String getImgPathFromGallary(final Context context,Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = ((Activity) context).managedQuery(uri, projection, null, null, null);
if (cursor != null) {
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} else
return null;
}
并调用
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri imguri= data.getData();
String imgPath= YourUtilityClass.getImgPathFromGallary(this,imguri);
SharedPreferences settings = activity.getSharedPreferences("Preferenze", 0);
SharedPreferences.Editor editor = settings.edit();
editor.putString("path", imgPath);
editor.commit();
}
}
试试这个..
答案 1 :(得分：0)
这应该有用......
public void getpic(){
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.setType("image/*");
startActivityForResult(Intent.createChooser(i, "select pic"), gallerycode );
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==gallerycode && resultCode == RESULT_OK){
Uri picaddr = data.getData();
String selectedpath = getpath(picaddr);
File f = new File(selectedpath);
String abspath = f.getAbsolutePath();
editor.putString("imageaddr",abspath );
editor.commit();
}
private String getpath(Uri picaddr) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(picaddr, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
我将图像的绝对路径保存到onActivityResult（）中的共享首选项。