这是我的代码段，我试图关闭对话框，但它没有被关闭，而且我在 logcat 上也没有收到任何错误。请纠正我哪里错了？

所有 Log.v 语句都被执行。即使是 pd.dismiss() (Log.v("TAG","progress dismiss");) 之后的 log.v 语句也被打印出来。

请指出我的错误或建议一些替代方法来关闭进度对话框。

 btnSave.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View arg0) {

                        // TODO Auto-generated method stub
                        //do something
                        } else {
                            Log.v("TAG","above progressDialog");
                            final ProgressDialog pd = new ProgressDialog(ChangePassword.this);
                            ProgressDialog.show(ChangePassword.this, "", "Loading...", false, true);
                            new Thread() {
                                public void run() {
                                    try {                               
                                        sleep(2000);
                                        Log.v("TAG","in try block");
                                    } catch (Exception e) {
                                        Log.e("tag", e.getMessage());
                                    }
                                    // dismiss the progress dialog
                                    pd.dismiss();
    //                              Log.v("TAG","progress dismiss");
                                }
                            }.start();
                            Log.v("TAG","after start");


                             public void run()
                             {
                                 try{

                                     if (!(txtOldPass.getText().toString())
                                            .equals(SetGetValues.getPassword())) {

                                        Toast.makeText(ChangePassword.this,
                                                "Invalid Old Password", Toast.LENGTH_SHORT)
                                                .show();
                                        txtOldPass.setText("");
                                        txtNewPass.setText("");
                                        txtCnfPass.setText("");
                                    } else {
                                        if (!(txtNewPass.getText().toString())
                                                .equals(txtCnfPass.getText().toString())) {
                                            Toast.makeText(ChangePassword.this,
                                                    "Re-Enter New Password",
                                                    Toast.LENGTH_SHORT).show();
                                            txtOldPass.setText("");
                                            txtNewPass.setText("");
                                            txtCnfPass.setText("");
                                        } else {
                                            try {

    handler = new Handler();
                         handler.postDelayed(new Thread (new Runnable(){
                                                JSONStringer loginuser = new JSONStringer()
                                                        .object()
                                                        .key("userid")
                                                        .value(SetGetValues.getUserid()
                                                                .trim())
                                                        .key("password")
                                                        .value(txtCnfPass.getText()
                                                                .toString().trim())
                                                        .key("oldpassword")
                                                        .value(txtOldPass.getText()
                                                                .toString().trim())
                                                        .endObject();
                                                StringEntity entity = new StringEntity(
                                                        loginuser.toString());
                                                JSONObject results = bc
                                                        .returnJSONObject(loginuser,
                                                                "url");

                                                String message = results
                                                        .getString("message");
                                                String isvalid = results
                                                        .getString("isvalid");
                                                if (isvalid.contains("FALSE")) {
                                                } else {
                                                    //pd.dismiss();
                                                    Toast.makeText(
                                                            ChangePassword.this,
                                                            "Password changed successfully",
                                                            Toast.LENGTH_SHORT).show();
                                                }
                                            } catch (Exception e) {
                                                 //TODO: handle exception
                                                e.printStackTrace();
                                            }
                                        }
                                    }
                             }catch(Exception e)
                             {
                                 e.printStackTrace();
                             }
                             }
                            }), 1000);


                        }
                    }

                });

最佳答案

您并没有关闭正在显示的同一个 ProgressDialog。替换为:

final ProgressDialog pd = new ProgressDialog(ChangePassword.this);
ProgressDialog.show(ChangePassword.this, "", "Loading...", false, true);

用这个:

final ProgressDialog pd = ProgressDialog.show(ChangePassword.this, "", "Loading...", false, true);

关于android - 无法关闭进度对话框，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/8076847/