我的Intent脚本始终显示错误

问题描述

| 我正在创建一个登录应用程序 登录脚本正常,返回正确和错误 如果响应返回true或1,我想使其转到另一个名为inputBarcode的活动,则日食在我的Intent行上显示错误,我不知道该怎么办 我不知道制作意图的其他变化 这是我的完整代码,我要调用的Intent在if(res.equals(\“ 1 \”)){{
    package com.nigmagrid.go;

    import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.AdapterView;
    //import android.widget.AdapterView.OnItemSelectedListener;
    import android.widget.ArrayAdapter;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.Spinner;
    import android.widget.TextView;
    import android.widget.Toast;

    import java.util.ArrayList;
    import org.apache.http.NameValuePair;
    import org.apache.http.message.BasicNameValuePair;

    public class login extends Activity {

        String lokasiTugas;

        boolean status_npp;
        boolean status_password;
        boolean status_lokasi;

        Button button;
        EditText usernameEditText,passwordEditText;
        TextView error;
        Spinner lokasiSpinner;

        final int minNPP = 3;

        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle icicle) {
            super.onCreate(icicle);

            setContentView(R.layout.login);

            final Button button = (Button) findViewById(R.id.login_button);
            final EditText usernameEditText = (EditText) findViewById(R.id.login_npp);
            final EditText passwordEditText = (EditText) findViewById(R.id.login_password);
            final Spinner lokasiSpinner = (Spinner) findViewById(R.id.spinner1);
            final TextView error = (TextView) findViewById(R.id.login_status);

            ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromresource(
                    this,R.array.lokasi_array,android.R.layout.simple_spinner_item);
            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

            lokasiSpinner.setAdapter(adapter);

            lokasiSpinner.setonItemSelectedListener(new AdapterView.OnItemSelectedListener() {
                @Override
                public void onItemSelected(AdapterView adapter,View v,int i,long lng) {
                    //Toast.makeText(getApplicationContext(),adapter.getItemAtPosition(i).toString(),Toast.LENGTH_SHORT).show();
                    lokasiTugas = adapter.getItemAtPosition(i).toString();
                }

                @Override
                public void onnothingSelected(AdapterView arg0) {
                    //do something else
                }
            });  

            button.setonClickListener(new View.OnClickListener() {
                public void onClick(View v) {

                    error.setText(\"Menghubungkan ke server...\");

                    ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
                    postParameters.add(new BasicNameValuePair(\"username\",usernameEditText.getText().toString()));
                    postParameters.add(new BasicNameValuePair(\"password\",passwordEditText.getText().toString()));

                    String response = null;

                    String sNPP = usernameEditText.getText().toString().replace(\" \",\"\");
                    String sPassword = passwordEditText.getText().toString();

                    // validasi NPP
                    if(sNPP.length()<=minNPP){
                        usernameEditText.setError(\"NPP minimal \"+minNPP+\" angka\");
                        status_npp = false;
                    }else{
                        status_npp = true;
                        //Toast.makeText(getApplicationContext(),\"NPP Anda : \"+sNPP,Toast.LENGTH_SHORT).show();
                    }

                    // validasi Password
                    if(sPassword.length()<1){
                        passwordEditText.setError(\"Kata sandi diperlukan\");
                        status_password = false;
                    }else{
                        status_password = true;
                    }

                    //validasi lokasiTugas
                    if(lokasiTugas.equals(\"Pilih Lokasi\")){
                        Toast.makeText(getApplicationContext(),\"Lokasi Tugas diperlukan\",Toast.LENGTH_SHORT).show();
                        status_lokasi = false;
                    }else{
                        status_lokasi = true;
                    }

                    // pengecekan akhir
                    if(status_npp == true && status_password == true && status_lokasi == true){

                        //Toast.makeText(getApplicationContext(),\"NPP Anda : \"+sNPP+\"\\nLokasi : \"+lokasiTugas,Toast.LENGTH_SHORT).show();


                        //fungsi login disini :D

                        try{
                            // variabel cek-nya ganti
                            String cek = \"http://almezuflash.zxq.net/kspt-android/ceklogin.PHP\";
                            response = CustomHttpClient.excecuteHttpPost(cek,postParameters);
                            String res = response.toString();
                            res = res.replaceAll(\"\\\\s\",\"\");

                            Toast.makeText(getApplicationContext(),res,Toast.LENGTH_SHORT).show();

                            if(res.equals(\"1\")){
                                error.setText(\"Login sukses\");
                                Toast.makeText(getApplicationContext(),\"Login Sukses\",Toast.LENGTH_SHORT).show();
// i want to make Intent but eclipse says error,and i don\'t kNow what to do

                                Intent dobarcode = new Intent(parent,inputBarcode.class);
                                startActivity(dobarcode);

                            }else{
                                error.setText(\"Login gagal\");
                                //Toast.makeText(getApplicationContext(),\"Login Gagal\",Toast.LENGTH_SHORT).show();
                            }

                        }catch (Exception e){
                            //error.setText(e.toString());
                            error.setText(\"Terjadi kesalahan,silahkan periksa koneksi internet anda\");
                        }

                    }else{
                        //Toast.makeText(getApplicationContext(),\"Otorisasi Gagal\",Toast.LENGTH_SHORT).show();
                        status_npp = false;
                        status_password = false;
                        status_lokasi = false;
                        error.setText(\"Login gagal,silahkan periksa kembali\");
                    }

                }
            });

        }
    }
对不起,我的英语不好,我来自印度尼西亚。     

解决方法

        您是否确定将inputBarCode活动添加到AndroidManifiedt?如果您没有这样做,那么将给出运行时错误。如果那不是问题,那么可能会改变
Intent doBarcode = new Intent(parent,inputBarcode.class);
Intent doBarcode = new Intent(this,inputBarcode.class);
将解决您的问题。我不熟悉所使用的父变量。 希望对您有所帮助。     ,        尝试代替
Intent doBarcode = new Intent(parent,inputBarcode.class);
使用此代码:
Intent doBarcode = new Intent(login.this,inputBarcode.class);