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配置文件圖片可以選擇和設置一段時間，但我們通常想要的（第一個對象）是當用戶重新啓動該頁面時，應該是以前由用戶設置的圖像，如果用戶沒有設置該圖像，則應該有默認圖像。我已經使用了文本視圖的共享首選項，但據說對於圖像視圖，通常最好先將選定的圖像存儲在SD卡中，然後獲取該Uri，將其設置爲字符串，然後將其用於共享首選項。我不知道是否可以通過onPause和onResume完成！如果是這樣，那麼應該選擇哪種方式？以及如何做到這一點？另一件事是（第二個對象）我有一個活動，即用戶配置文件，我想從編輯配置文件活動中充入數據（這裏，用戶選擇的配置文件圖片）。這與編輯配置文件的情況相同，如果用戶沒有設置自定義配置文件圖片，則應該有默認圖片。以下是我的編輯個人資料活動：如何：在SD卡中存儲圖像，存儲和獲取配置文件的共享首選圖像路徑
public class EditUserProfile extends AppCompatActivity {
private CoordinatorLayout coordinatorLayout;
public static final String Uimage = "Uimage";
public static final String Name = "nameKey";
public static final String UContact = "UContact";
public static final String Uemail = "Uemail";
private TextInputLayout inputLayoutName, inputLayoutEmail, inputLayoutContact;
private EditText usernameTextView, userEmailTextView, userContactTextView;
private ImageView userImageView;
SharedPreferences sharedpreferences;
private int PICK_IMAGE_REQUEST = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_edit_user_profile);
Toolbar userProfileToolbar = (Toolbar) findViewById(R.id.my_toolbar);
setSupportActionBar(userProfileToolbar);
inputLayoutName = (TextInputLayout) findViewById(R.id.input_layout_username);
inputLayoutEmail = (TextInputLayout) findViewById(R.id.input_layout_useremail);
inputLayoutContact = (TextInputLayout) findViewById(R.id.input_layout_usercontact);
userImageView = (ImageView) findViewById(R.id.userImage);
usernameTextView = (EditText) findViewById(R.id.username);
userContactTextView = (EditText) findViewById(R.id.usercontact);
userEmailTextView = (EditText) findViewById(R.id.useremail);
Button btnSave = (Button) findViewById(R.id.action_save);
sharedpreferences = getSharedPreferences(Uimage, Context.MODE_PRIVATE);
sharedpreferences = getSharedPreferences(Name, Context.MODE_PRIVATE);
sharedpreferences = getSharedPreferences(UContact, Context.MODE_PRIVATE);
sharedpreferences = getSharedPreferences(Uemail, Context.MODE_PRIVATE);
if (sharedpreferences.contains(Name)) {
usernameTextView.setText(sharedpreferences.getString(Name, ""));
}
if (sharedpreferences.contains(UContact)) {
userContactTextView.setText(sharedpreferences.getString(UContact, ""));
}
if (sharedpreferences.contains(Uemail)) {
userEmailTextView.setText(sharedpreferences.getString(Uemail, ""));
}
usernameTextView.addTextChangedListener(new MyTextWatcher(usernameTextView));
userEmailTextView.addTextChangedListener(new MyTextWatcher(userEmailTextView));
userContactTextView.addTextChangedListener(new MyTextWatcher(userContactTextView));
coordinatorLayout = (CoordinatorLayout) findViewById(R.id
.coordinatorLayout);
final ImageButton button = (ImageButton) findViewById(R.id.editImage);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click
Intent intent = new Intent();
// Show only images, no videos or anything else
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
// Always show the chooser (if there are multiple options available)
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
// Log.d(TAG, String.valueOf(bitmap));
userImageView.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Validating form
*/
private boolean submitForm() {
if (!validateName()) {
return false;
}
if (!validateContact()) {
return false;
}
if (!validateEmail()) {
return false;
}
Snackbar snackbar = Snackbar
.make(coordinatorLayout, "Saved!", Snackbar.LENGTH_LONG);
snackbar.show();
return true;
}
private boolean validateName() {
if (usernameTextView.getText().toString().trim().isEmpty()) {
inputLayoutName.setError(getString(R.string.err_msg_name));
requestFocus(usernameTextView);
return false;
} else {
inputLayoutName.setError(null);
}
return true;
}
private boolean validateEmail() {
String email = userEmailTextView.getText().toString().trim();
if (email.isEmpty() || !isValidEmail(email)) {
inputLayoutEmail.setError(getString(R.string.err_msg_email));
requestFocus(userEmailTextView);
return false;
} else {
inputLayoutEmail.setError(null);
}
return true;
}
private boolean validateContact() {
if (userContactTextView.getText().toString().trim().isEmpty()) {
inputLayoutContact.setError(getString(R.string.err_msg_contact));
requestFocus(userContactTextView);
return false;
} else {
inputLayoutContact.setError(null);
}
return true;
}
private static boolean isValidEmail(String email) {
return !TextUtils.isEmpty(email) && android.util.Patterns.EMAIL_ADDRESS.matcher(email).matches();
}
private void requestFocus(View view) {
if (view.requestFocus()) {
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
}
}
private class MyTextWatcher implements TextWatcher {
private View view;
private MyTextWatcher(View view) {
this.view = view;
}
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
public void afterTextChanged(Editable editable) {
switch (view.getId()) {
case R.id.username:
validateName();
break;
case R.id.useremail:
validateEmail();
break;
case R.id.usercontact:
validateContact();
break;
}
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.editprofile_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_save:
if (!submitForm()){
return false;
}
TextView usernameTextView = (TextView) findViewById(R.id.username);
String usernameString = usernameTextView.getText().toString();
SharedPreferences.Editor editor = sharedpreferences.edit();
editor.putString(Name, usernameString);
editor.apply();
TextView ucontactTV = (TextView) findViewById(R.id.usercontact);
String uContactS = ucontactTV.getText().toString();
editor.putString(UContact, uContactS);
editor.apply();
TextView uEmailTV = (TextView) findViewById(R.id.useremail);
String uEmailS = uEmailTV.getText().toString();
editor.putString(Uemail, uEmailS);
editor.apply();
Snackbar snackbar = Snackbar
.make(coordinatorLayout, "Saved!", Snackbar.LENGTH_LONG);
snackbar.show();
Intent userProfileIntent = new Intent(EditUserProfile.this, UserProfile.class);
userProfileIntent.putExtra(Name, usernameString);
userProfileIntent.putExtra(UContact, uContactS);
userProfileIntent.putExtra(Uemail, uEmailS);
setResult(RESULT_OK, userProfileIntent);
finish();
}
return true;
}
}
以下是我想要的膨脹從編輯個人資料活動默認或自定義配置文件PIC的一樣，我能夠膨脹的文本視圖其餘用戶配置文件活動：
public class UserProfile extends AppCompatActivity {
SharedPreferences sharedpreferences;
public static final String Uimage = "Uimage";
public static final String Name = "nameKey";
public static final String UContact = "UContact";
public static final String Uemail = "Uemail";
public static final int Edit_Profile = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_profile);
Toolbar userProfileToolbar = (Toolbar) findViewById(R.id.my_toolbar);
setSupportActionBar(userProfileToolbar);
sharedpreferences = getSharedPreferences(Uimage, MODE_PRIVATE);
sharedpreferences = getSharedPreferences(Name, MODE_PRIVATE);
sharedpreferences = getSharedPreferences(UContact, MODE_PRIVATE);
sharedpreferences = getSharedPreferences(Uemail, MODE_PRIVATE);
displayMessage(sharedpreferences.getString(Name, ""));
displayUContact(sharedpreferences.getString(UContact, ""));
displayUEmail(sharedpreferences.getString(Uemail, ""));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.userprofile_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_editProfile:
Intent userProfileIntent = new Intent(UserProfile.this, EditUserProfile.class);
startActivityForResult(userProfileIntent, Edit_Profile);
return true;
}
return true;
}
// Call Back method to get the Message form other Activity
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case Edit_Profile:
if (resultCode == RESULT_OK) {
String name = data.getStringExtra(Name);
String Result_UContact = data.getStringExtra(UContact);
String Result_UEmail = data.getStringExtra(Uemail);
displayMessage(name);
displayUContact(Result_UContact);
displayUEmail(Result_UEmail);
}
break;
}
}
public void displayMessage(String message) {
TextView usernameTextView = (TextView) findViewById(R.id.importProfile);
usernameTextView.setText(message);
}
public void displayUContact(String contact) {
TextView userContactTextView = (TextView) findViewById(R.id.importContact);
userContactTextView.setText(contact);
}
public void displayUEmail(String email) {
TextView userEmailTextView = (TextView) findViewById(R.id.importEmail);
userEmailTextView.setText(email);
}
}
請考慮，我沒有經驗的編程，編碼或Android開發，我剛開始學習！
...以及如何將圖像存儲到內部存儲？ （因爲有些設備並沒有真正的外置SD卡！） –
我想我不需要將圖像存儲在除原始圖像以外的任何位置，因爲它似乎毫無意義（來自新手視圖），因爲它可以從那裏刪除所以我最好把它存儲在服務器端！ –