问题
Hope you can notice a prof pic in this below Image but the random guy who did it just hard coded the Image. I have fetched the username, E-mail ID and prof pic from Facebook and I have hooked username and E-mail id with navigation drawer activity,but I don't know how to display the prof_pic which I fetched from Facebook I just don't no how to assign it. let me know if there is any possible way to do it.the below is the nav_header.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="@dimen/nav_header_height"
android:background="@drawable/side_nav_bar"
android:gravity="bottom"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin">
<ImageView
android:id="@+id/profpic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="@dimen/nav_header_vertical_spacing"
android:src="@android:drawable/sym_def_app_icon" />
</LinearLayout>
and this is the java file where I need to fetch the prof_pic from .java class file
public class Testing2 extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_testing2);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
////////Code is used to fetch the user name////////////
Bundle b = getIntent().getExtras();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
TextView facebookName = (TextView) navigationView.getHeaderView(0).findViewById(R.id.manner);
TextView Email = (TextView) navigationView.getHeaderView(0).findViewById(R.id.email);
ImageView profilePictureView = (ImageView) navigationView.getHeaderView(0).findViewById(R.id.profpic);
////////Code is used to display the user name after fetching it from other activity////////////
facebookName.setText(b.getCharSequence("name"));
Email.setText(b.getCharSequence("email"));
profilePictureView.setProfileId();
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
}
This is the .java file where I used to fetch the username,mail Id and prof pic
public class SelfTrail extends AppCompatActivity implements View.OnClickListener {
private LoginButton btnLogin;
TextView facebookName;
TextView Email;
Button button;
private CallbackManager callbackManager;
private ProfilePictureView profilePictureView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
setContentView(R.layout.activity_self_trail);
findAllViewsId();
button.setOnClickListener(this);
btnLogin = (LoginButton)findViewById(R.id.login_button);
facebookName = (TextView)findViewById(R.id.name);
Email = (TextView)findViewById(R.id.Email);
profilePictureView = (ProfilePictureView)findViewById(R.id.image);
btnLogin.setReadPermissions(Arrays.asList("public_profile, email"));
callbackManager = CallbackManager.Factory.create();
if(AccessToken.getCurrentAccessToken() != null){
RequestData();
facebookName.setVisibility(View.VISIBLE);
Email.setVisibility(View.VISIBLE);
profilePictureView.setVisibility(View.VISIBLE);
}
btnLogin.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
GraphRequest request = GraphRequest.newMeRequest(
loginResult.getAccessToken(),
new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject object, GraphResponse response) {
Log.v("Main", response.toString());
setProfileToView(object);
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email");
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException exception) {
}
});
}
private void findAllViewsId() {
button = (Button) findViewById(R.id.next);
facebookName = (TextView)findViewById(R.id.name);
Email = (TextView)findViewById(R.id.Email);
profilePictureView = (ProfilePictureView)findViewById(R.id.image);
}
@Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), Testing2.class);
//Create a bundle object
Bundle b = new Bundle();
//Inserts a String value into the mapping of this Bundle
b.putString("name", facebookName.getText().toString());
b.putString("email", Email.getText().toString());
b.putString("image", profilePictureView.toString());
//Add the bundle to the intent.
intent.putExtras(b);
//start the DisplayActivity
startActivity(intent);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
callbackManager.onActivityResult(requestCode, resultCode, data);
}
public void RequestData(){
GraphRequest request = GraphRequest.newMeRequest(AccessToken.getCurrentAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(JSONObject jsonObject,GraphResponse response) {
JSONObject json = response.getJSONObject();
try {
if(json != null){
facebookName.setText(jsonObject.getString("name"));
Email.setText(jsonObject.getString("email"));
profilePictureView.setPresetSize(ProfilePictureView.NORMAL);
profilePictureView.setProfileId(jsonObject.getString("id"));
}
} catch (JSONException e) {
e.printStackTrace();
}
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email");
request.setParameters(parameters);
request.executeAsync();
}
private void setProfileToView(JSONObject jsonObject) {
try {
facebookName.setText(jsonObject.getString("name"));
Email.setText(jsonObject.getString("email"));
profilePictureView.setPresetSize(ProfilePictureView.NORMAL);
profilePictureView.setProfileId(jsonObject.getString("id"));
} catch (JSONException e) {
e.printStackTrace();
}
}
}
回答1:
The best way would be using Picasso Library. It automatically fetches image from url in background and sets it to the imageView.
Add this to the build.gradle file under dependencies
compile 'com.squareup.picasso:picasso:2.5.2'
And then in your code instead of profilePictureView.setProfileId(); use
Picasso.with(this).load( "http://graph.facebook.com/"+userID+"/picture?type=small").into(profilePictureView)
Where userID is the used id of the profile.
回答2:
You can always you image loading library for loading images in efficient way (Like Picasso or Glide). In you case, (using Picasso) you can write
Picasso.with(context)
.load(url)
.placeholder(R.drawable.loading_img)
.error(R.drawable.error_img)
.into(profilePictureView);
Where your url = https://graph.facebook.com/" + id + "/picture?width=200&height=150
I hope this helps.
回答3:
I don't know what this does:
profilePictureView.setProfileId();
But to set the image just use:
profilePictureView.setImageBitmap(pass_image_bitmap_here);
回答4:
All you need is the user ID for the user, then you can call a function like this:
/**
* Function loads the users facebook profile pic
*
* @param userID
*/
public Bitmap getUserPic(String userID) {
String imageURL;
Bitmap bitmap = null;
Log.d(TAG, "Loading Picture");
imageURL = "http://graph.facebook.com/"+userID+"/picture?type=small";
try {
bitmap = BitmapFactory.decodeStream((InputStream)new URL(imageURL).getContent());
} catch (Exception e) {
Log.d("TAG", "Loading Picture FAILED");
e.printStackTrace();
}
return bitmap;
}
回答5:
This is the way that I came up with.
Use Picasso library which is used for image processing in android.
Add dependency in gradle:
compile 'com.squareup.picasso:picasso:2.5.2'Add in your activity to display the fetched image:
Picasso.with(context) .load(url) .placeholder(R.drawable.loading_img) .error(R.drawable.error_img) .into(profilePictureView);
来源：https://stackoverflow.com/questions/36468899/displaying-fetched-profile-picture-in-navigation-drawer-activity