我正在从facebook获取用户的个人资料图片，我想将其发送到ProfileActivity.java，以便在用户个人资料中显示。
问题是图像没有从SignUpScreen.java发送到ProfileActivity.java。虽然我可以发送姓名&从一个到另一个的电子邮件。
这是SignUpScreen.java文件的代码：
public class SignUpScreen extends AppCompatActivity {
Button facebookLoginButton;
CircleImageView mProfileImage;
TextView mUsername, mEmailID;
Profile mFbProfile;
ParseUser user;
Bitmap bmp = null;
public String name, email, userID;
public static final List<String> mPermissions = new ArrayList<String>() {{
add("public_profile");
add("email");
}};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.content_sign_up_screen);
TextView textView = (TextView) findViewById(R.id.h);
Typeface typeface = Typeface.createFromAsset(getBaseContext().getAssets(), "fonts/Pac.ttf");
textView.setTypeface(typeface);
mProfileImage = (CircleImageView) findViewById(R.id.user_profile_image);
mUsername = (TextView) findViewById(R.id.userName);
mEmailID = (TextView) findViewById(R.id.aboutUser);
mFbProfile = Profile.getCurrentProfile();
//mUsername.setVisibility(View.INVISIBLE);
//mEmailID.setVisibility(View.INVISIBLE);
facebookLoginButton = (Button) findViewById(R.id.facebook_login_button);
facebookLoginButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ParseFacebookUtils.logInWithReadPermissionsInBackground(SignUpScreen.this, mPermissions, new LogInCallback() {
@Override
public void done(ParseUser user, ParseException err) {
if (user == null) {
Log.d("MyApp", "Uh oh. The user cancelled the Facebook login.");
} else if (user.isNew()) {
Log.d("MyApp", "User signed up and logged in through Facebook!");
getUserDetailsFromFacebook();
final Handler handler3 = new Handler();
handler3.postDelayed(new Runnable() {
@Override
public void run() {
saveNewUser();
}
}, 5000);
} else {
Log.d("MyApp", "User logged in through Facebook!");
}
}
});
}
});
}
public void saveNewUser() {
user = new ParseUser();
user.setUsername(name);
user.setEmail(email);
user.setPassword("hidden");
user.signUpInBackground(new SignUpCallback() {
@Override
public void done(ParseException e) {
if (e == null) {
Toast.makeText(SignUpScreen.this, "SignUp Succesful", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(SignUpScreen.this, "SignUp Unsuccesful", Toast.LENGTH_LONG).show();
Log.d("error when signingup", e.toString());
}
}
});
}
private void getUserDetailsFromFacebook() {
final GraphRequest request = GraphRequest.newMeRequest(AccessToken.getCurrentAccessToken(),
new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(
JSONObject object,
GraphResponse response) {
// Application code
//Log.d("response", "response" + object.toString());
Intent profileIntent = new Intent(SignUpScreen.this, ProfileActivity.class);
Bundle b = new Bundle();
try {
name = response.getJSONObject().getString("name");
mUsername.setText(name);
email = response.getJSONObject().getString("email");
mEmailID.setText(email);
userID = response.getJSONObject().getString("id");
new ProfilePicAsync().execute(userID);
b.putString("userName", name);
b.putString("userEmail", email);
profileIntent.putExtras(b);
profileIntent.putExtra("user_pic", bmp);
startActivity(profileIntent);
} catch (JSONException e) {
e.printStackTrace();
}
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "name, email, id");
request.setParameters(parameters);
request.executeAsync();
}
class ProfilePicAsync extends AsyncTask<String, String, String> {
@Override
protected String doInBackground(String... params) {
String imageURL;
String id = userID;
imageURL = "https://graph.facebook.com/"+ id +"/picture?type=large";
try {
bmp = BitmapFactory.decodeStream((InputStream)new URL(imageURL).getContent());
} catch (Exception e) {
e.printStackTrace();
Log.d("Loading picture failed", e.toString());
}
return null;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
mProfileImage.setImageBitmap(bmp);
}
}
}
这是ProfileActivity.java文件的代码：
public class ProfileActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Bundle bundle = getIntent().getExtras();
CircleImageView mProfileImage = (CircleImageView) findViewById(R.id.user_profile_image);
TextView mUsername = (TextView) findViewById(R.id.userName);
TextView mEmailID = (TextView) findViewById(R.id.aboutUser);
Bitmap bitmap = (Bitmap) getIntent().getParcelableExtra("user_pic");
mProfileImage.setImageBitmap(bitmap);
mUsername.setText(bundle.getString("userName"));
mEmailID.setText(bundle.getString("userEmail"));
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
}
请告诉我这里出了什么问题。
在getUserDetailsFromFacebook()方法中，您已经调用new ProfilePicAsync().execute(userID)来获取图像。但似乎在获取图像之前，startActivity(profileIntent)可能会被调用。首先要确保你已经从facebook上获取了图片，然后再调用startActivity(profileIntent)。
编辑
将此添加到您的getUserDetailsFromFacebook()、
b.putString("userName", name);
b.putString("userEmail", email);
profileIntent.putExtras(b);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
profileIntent.putExtra("user_pic", byteArray);
startActivity(profileIntent);
将此添加到您的ProfileActivity.java，
byte[] byteArray = getIntent().getByteArrayExtra("user_pic");
Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
mProfileImage.setImageBitmap(bmp);
这不是在同一应用程序中将图像从"活动"传递到"活动"的正确方法。您可以轻松地按意图发送路径，并将其加载到其他"活动"中。
要在Activity A中保存位图，请使用
FileOutputStream out = null;
try {
out = new FileOutputStream(FILENAME); //FILENAME is your defined place to store image
bmp.compress(Bitmap.CompressFormat.PNG, 100, out);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
现在您有了FILENAME全局字符串，它可以从Activity B访问。只要把它装在需要的地方。
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap bitmap = BitmapFactory.decodeFile(FILENAME, options);
mProfileImage.setImageBitmap(bitmap);
它对我有效。
OneActivity.java
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
Intent intent = new Intent(StartPage.this, SecondActivity.class);
Toast.makeText(StartPage.this, "You have setted this wallpaper for Monday", Toast.LENGTH_LONG).show();
intent.putExtra("pic", byteArray);
//intent.putExtra("resourseInt", bm);
startActivity(intent);
SecondActivity.Java
byte[] byteArray;
Bitmap bmp,
byteArray = getIntent().getByteArrayExtra("pic");
bmp1 = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
myWallpaperManager.setBitmap(bmp);