其他活动

Question

从一个活动应用程序传递崩溃。有人能帮我吗。我尝试了多种方法。先谢谢你们所有人。

package com.wing.test2.test2;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;


public class person extends AppCompatActivity {
    Button submit_person;
    EditText user_ida,name,gander,age;
    //Intent  patient_data = new Intent(this, patient.class);

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate( savedInstanceState );
        setContentView( R.layout.activity_person );



        submit_person = (Button) findViewById( R.id.submit_person );
        user_ida = (EditText) findViewById( R.id.userid );
        name = (EditText) findViewById( R.id.name );
        gander = (EditText) findViewById( R.id.gander );
        age = (EditText) findViewById( R.id.age );

        submit_person.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View arg0) {
                   Log.v( "EditText", user_ida.getText().toString() );
                    Log.v( "EditText", name.getText().toString() );
                    Log.v( "EditText", gander.getText().toString() );
                    Log.v( "EditText", age.getText().toString() );


                    String user_id = user_ida.getText().toString();
                    String user_name = name.getText().toString();
                    String user_gander = gander.getText().toString();
                    String user_a = age.getText().toString();

                    Intent patient_data =new Intent(getApplicationContext(),patient.class);

                    patient activity = new patient();
                    activity.displayInfo(user_name,user_gander,user_id,user_a);
                    startActivity(patient_data);

                    /*patient_data.putExtra("id",user_id);
                    patient_data.putExtra( "name", user_name );
                    patient_data.putExtra( "gander", user_gander );
                    patient_data.putExtra( "age", user_a );
                    startActivity( patient_data );
                    */
                }
            } );

    }

}

============================================== < / p>

其他活动

包com.wing.test2.test2;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.EditText;
import android.widget.TextView;

public class patient  extends person {

   //Intent patient_data = getIntent();
   person patient_data = new person();

    TextView textView2,textView,textView3,textView4;

    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate( savedInstanceState );
        setContentView(R.layout.patient);
        Log.v( "EditText", patient_data.toString() );
/*
        String user_id = patient_data.getStringExtra("id");
        String name = patient_data.getStringExtra("name");
        String gander = patient_data.getStringExtra("gander");
        String user_age = patient_data.getStringExtra("age");
        textView2 = (TextView) findViewById(R.id.textView2);
        textView = (TextView) findViewById(R.id.textView);
        textView3 = (EditText) findViewById(R.id.textView3);
        textView4 = (TextView) findViewById(R.id.textView4);

        textView2.setText(user_id);
        textView.setText(name);
        textView3.setText(gander);
        textView4.setText(user_age);*/
    }
    public void displayInfo(String name, String gander, String user_ida, String age)
    {
        textView2 = (TextView) findViewById(R.id.textView2);
        textView = (TextView) findViewById(R.id.textView);
        textView3 = (EditText) findViewById(R.id.textView3);
        textView4 = (TextView) findViewById(R.id.textView4);

        textView2.setText( (CharSequence) user_ida );
        textView.setText( (CharSequence) name );
        textView3.setText( (CharSequence) gander );
        textView4.setText( (CharSequence) age );
    }
}

这是错误日志

02-10 02:35:08.651 19910-19910/com.wing.test2.test2 D/ViewRootImpl: ViewPostImeInputStage ACTION_DOWN
02-10 02:35:08.721 19910-19910/com.wing.test2.test2 V/EditText: 12
02-10 02:35:08.731 19910-19910/com.wing.test2.test2 V/EditText: 12
02-10 02:35:08.731 19910-19910/com.wing.test2.test2 V/EditText: 233
02-10 02:35:08.731 19910-19910/com.wing.test2.test2 V/EditText: Wer
02-10 02:35:08.741 19910-19910/com.wing.test2.test2 D/AndroidRuntime: Shutting down VM
02-10 02:35:08.751 19910-19910/com.wing.test2.test2 E/AndroidRuntime: FATAL EXCEPTION: main
                                                                      Process: com.wing.test2.test2, PID: 19910
                                                                      java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
                                                                          at android.support.v7.app.AppCompatDelegateImplBase.<init>(AppCompatDelegateImplBase.java:68)
                                                                          at android.support.v7.app.AppCompatDelegateImplV7.<init>(AppCompatDelegateImplV7.java:146)
                                                                          at android.support.v7.app.AppCompatDelegateImplV11.<init>(AppCompatDelegateImplV11.java:28)
                                                                          at android.support.v7.app.AppCompatDelegateImplV14.<init>(AppCompatDelegateImplV14.java:41)
                                                                          at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:190)
                                                                          at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:172)
                                                                          at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:512)
                                                                          at android.support.v7.app.AppCompatActivity.findViewById(AppCompatActivity.java:184)
                                                                          at com.wing.test2.test2.patient.displayInfo(patient.java:39)
                                                                          at com.wing.test2.test2.person$1.onClick(person.java:47)
                                                                          at android.view.View.performClick(View.java:5076)
                                                                          at android.view.View$PerformClick.run(View.java:20279)
                                                                          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:5910)
                                                                          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:1405)
                                                                          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)
02-10 02:35:26.458 19910-19910/com.wing.test2.test2 I/Process: Sending signal. PID: 19910 SIG: 9

Answer 1

试试这个：在你的第一个活动中

patient activity = new patient();
activity.displayInfo(user_name,user_gander,user_id,user_a);

同样删除：

    public class patient extends Activity {

   person patient_data = new person();

    TextView textView2,textView,textView3,textView4;

    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate( savedInstanceState );
        setContentView(R.layout.patient);
        Log.v( "EditText", patient_data.toString() );

        Intent patient_data = getIntent();
        String user_id = patient_data.getStringExtra("id");
        String name = patient_data.getStringExtra("name");
        String gander = patient_data.getStringExtra("gander");
        String user_age = patient_data.getStringExtra("age");
        textView2 = (TextView) findViewById(R.id.textView2);
        textView = (TextView) findViewById(R.id.textView);
        textView3 = (EditText) findViewById(R.id.textView3);
        textView4 = (TextView) findViewById(R.id.textView4);

        textView2.setText(user_id);
        textView.setText(name);
        textView3.setText(gander);
        textView4.setText(user_age);
    }
}

现在进行第二次活动：

import requests
from bs4 import BeautifulSoup

result = requests.get("https://en.wikipedia.org/wiki/List_of_Game_of_Thrones_episodes")
result

page = result.content
soup = BeautifulSoup(page, "lxml")
soup 

table = soup.find("table", {"class" : "wikitable plainrowheaders wikiepisodetable"})
table

    f = open('output.csv', 'w')
    for row in table.findAll("th"):
        cells = row.findAll("td")
        if len(cells) == 7:

            No_overall = cells[0].find(text = True)

            No_in_season = cells[1].find(text = True)

            Title = cells[2].find(text = True)

            Directed_by = cells[3].find(text = True)

            Written_by = cells[4].find(text = True)

            Original_air_date = cells[5].find(text = True).replace(',','')

            US_viewers = cells[6].find(text = True).replace('.','')

            line = No_overall  + "," + No_in_season + "," + Title + "," +          
    Directed_by +"," + Written_by + "," + Original_air_date + "," +      
    US_viewers + "\n"

            print(line)

            f.write(write_to_file)

Answer 2

你需要在Manifest中声明它。（根据错误登录图片）
您将textView定义为EditText。

textView3 =（EditText / 将其替换为TextView /）findViewById（R.id.textView3）;

将值从一个活动传递到另一个aondroid应用程序崩溃

其他活动

2 个答案: