我正在尝试显示加载进度条，同时向我的服务器发送请求以从facebook图形api注册用户数据。但是我有一个错误。“java.lang.IllegalStateException：指定的子项已经有父项。必须首先在孩子的父母身上调用removeView（）“。请你看看这个。 Login.java
function theDifference(){
for(var emre = 0; emre < 10; emre++){
// emre is visible inside of this for()
}
// emre is visible here too.
}
progressbar.xml
package fixmystreet.teamyolo.net.pyinpaypar;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.GraphRequest;
import com.facebook.GraphResponse;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
import com.securepreferences.SecurePreferences;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.Arrays;
import java.util.HashMap;
import fixmystreet.teamyolo.net.pyinpaypar.Api.LoginApi;
import fixmystreet.teamyolo.net.pyinpaypar.Api.MainService;
import fixmystreet.teamyolo.net.pyinpaypar.Utilties.FinalResult;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class Login extends AppCompatActivity {
private TextView greetTxt;
private LoginButton loginButton;
private CallbackManager callbackManager;
public String user_id;
public String user_name;
private SecurePreferences sharedPreferences;
private String mail;
ProgressBar myProgressBar;
AlertDialog.Builder myDialogBuilder;
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
callbackManager.onActivityResult(requestCode, resultCode, data);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
callbackManager = CallbackManager.Factory.create();
setContentView(R.layout.activity_login);
loginButton = (LoginButton) findViewById(R.id.login_button);
greetTxt = (TextView) findViewById(R.id.info);
greetTxt.setTypeface(MainApplication.typefaceManager.getUnicode());
loginButton.setReadPermissions(Arrays.asList("public_profile, email"));
myDialogBuilder = new AlertDialog.Builder(this);
myDialogBuilder.setTitle("loading");
loginButton.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) {
try {
user_name = response.getJSONObject().get("name") + "";
user_id = response.getJSONObject().get("id") + "";
mail = response.getJSONObject().get("email") + "";
Toast.makeText(Login.this, "Logging in.Please wait!",
Toast.LENGTH_SHORT).show();
sharedPreferences = new SecurePreferences(getApplicationContext());
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("id", user_id);
editor.putString("name",user_name);
editor.commit();
MainApplication.securedUserId=user_id;
MainApplication.securedUserName=user_name;
Log.i("Before circular loading","Before circular loading");
//for circular loading
View ProgressView = LayoutInflater.from(getApplicationContext()).inflate(R.layout.progressbar,null);
myProgressBar=(ProgressBar)ProgressView.findViewById(R.id.ProgressBar);
myDialogBuilder.setView(myProgressBar);
//myProgressBar.getParent().removeView();
myDialogBuilder.create().show();
register(user_id);
} catch (JSONException e) {
e.printStackTrace();
}
try {
response.getJSONObject().get("id");
} catch (JSONException e) {
e.printStackTrace();
}
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email,gender, birthday");
request.setParameters(parameters);
request.executeAsync();
}
@Override
public void onCancel() {
Log.i("On Cancel", "On Cancel");
}
@Override
public void onError(FacebookException error) {
Log.i("ggwp", error.getMessage());
Toast.makeText(Login.this, "Error in facebook login",
Toast.LENGTH_SHORT).show();
}
});
}
public void setProfile() {
getFacebookProfilePicture(user_id + "");
}
public void getFacebookProfilePicture(String userID) {
try {
String imageUrl = "https://graph.facebook.com/" + userID + "/picture?type=large";
} catch (Exception e) {
Log.e("ReadRdaJSONFeedTask", e.getLocalizedMessage() == null ? "ERROR IS NULL" : "ERROR IS NOT NULL AND IT IS:" + e.getLocalizedMessage());
}
}
public void register(String id) {
Toast.makeText(Login.this, "Logging in.Please wait!",
Toast.LENGTH_SHORT).show();
String pic_link = "https://graph.facebook.com/" + id + "/picture?type=large";
Call<HashMap<String, String>> register = LoginApi.createService(MainService.class).register(id, user_name, pic_link, mail);
Toast.makeText(Login.this, "Logging in.Please wait!",
Toast.LENGTH_SHORT).show();
register.enqueue(new Callback<HashMap<String, String>>() {
@Override
public void onResponse(Call<HashMap<String, String>> call, Response<HashMap<String, String>> response) {
Toast.makeText(Login.this, "Success Login!",
Toast.LENGTH_SHORT).show();
Log.i("SUCCESS:", "MOTHER FUCKER");
Log.i("Server Message:", response.message().toString());
FinalResult.isLoggedIn = true;
Intent i = new Intent(Login.this, MainActivity.class);
startActivity(i);
}
@Override
public void onFailure(Call<HashMap<String, String>> call, Throwable t) {
Toast.makeText(Login.this, "Facebook Login Fail!",
Toast.LENGTH_SHORT).show();
}
});
}
}
这是我的日志
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ProgressBar
android:id="@+id/ProgressBar"
style="?android:attr/progressBarStyleLarge"
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true" />
</RelativeLayout>
这是第112行Login.java
05-25 20:52:43.712 2799-2855/fixmystreet.teamyolo.net.pyinpaypar E/chromium: [ERROR:buffer_manager.cc(313)] [.Parent-Compositor-0xe2b09a90]GL ERROR :GL_INVALID_OPERATION : glBufferData: <- error from previous GL command
05-25 20:54:14.892 2799-2799/fixmystreet.teamyolo.net.pyinpaypar E/AndroidRuntime: FATAL EXCEPTION: main
Process: fixmystreet.teamyolo.net.pyinpaypar, PID: 2799
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
at android.view.ViewGroup.addViewInner(ViewGroup.java:3880)
at android.view.ViewGroup.addView(ViewGroup.java:3733)
at android.view.ViewGroup.addView(ViewGroup.java:3709)
at android.support.v7.app.AlertController.setupCustomContent(AlertController.java:610)
at android.support.v7.app.AlertController.setupView(AlertController.java:449)
at android.support.v7.app.AlertController.installContent(AlertController.java:214)
at android.support.v7.app.AlertDialog.onCreate(AlertDialog.java:240)
at android.app.Dialog.dispatchOnCreate(Dialog.java:373)
at android.app.Dialog.show(Dialog.java:274)
at fixmystreet.teamyolo.net.pyinpaypar.Login$1$1.onCompleted(Login.java:112)
at com.facebook.GraphRequest$1.onCompleted(GraphRequest.java:304)
at com.facebook.GraphRequest$5.run(GraphRequest.java:1379)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
答案 0 :(得分：1)
您应该尝试将视图设置为整个布局，而不是其中的单个元素。试着这样做：
View ProgressView = LayoutInflater.from(getApplicationContext()).inflate(R.layout.progressbar,null);
myDialogBuilder.setView(ProgressView);
myDialogBuilder.create().show();
与此特定问题无关的另一条建议：
遵循Java中的命名约定;方法和变量在开头使用 camelCase 命名为小写字母;所以在你的情况下，它将是
progressView，类总是以大写字母开头。