Starten Sie eine andere Aktivität, indem Sie auf eine Schaltfläche klicken

Question

Also heres mein Problem. Ich habe eine Taste nach oben, die beim Anklicken soll eine neue Aktivität öffnen, aber wenn darauf geklickt wird Ich erhalte eine Fehlermeldung: Leider „app_name“ hat aufgehört zu arbeiten meine logcat sage: Fatal Exception Haupt

So here meine xml:

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 
    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentTop="true" 
     android:layout_marginLeft="30dp" 
     android:layout_marginTop="58dp" 
     android:text="Monday" 
     android:textSize="20sp"/> 

     <TextView 
     android:id="@+id/textView2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/textView1" 
     android:layout_below="@+id/textView1" 
     android:layout_marginTop="30dp" 
     android:textSize="20sp" 
     android:text="Tuesday" /> 

     <TextView 
     android:id="@+id/textView3" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/textView2" 
     android:layout_below="@+id/textView2" 
     android:layout_marginTop="30dp" 
     android:textSize="20sp" 
     android:text="Wednesday" /> 

     <TextView 
     android:id="@+id/textView4" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/textView3" 
     android:layout_below="@+id/textView3" 
     android:layout_marginTop="30dp" 
     android:textSize="20sp" 
     android:text="Thursday" /> 

     <TextView 
     android:id="@+id/textView5" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/textView4" 
     android:layout_below="@+id/textView4" 
     android:layout_marginTop="30dp" 
     android:textSize="20sp" 
     android:text="Friday" /> 

     <TextView 
     android:id="@+id/textView6" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/textView5" 
     android:layout_below="@+id/textView5" 
     android:layout_marginTop="30dp" 
     android:textSize="20sp" 
     android:text="Saturday" /> 

     <TextView 
     android:id="@+id/textView7" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/textView6" 
     android:layout_below="@+id/textView6" 
     android:layout_marginTop="30dp" 
     android:textSize="20sp" 
     android:text="Sunday" /> 

     <Button 
      android:id="@+id/button1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/textView1" 
      android:layout_alignBottom="@+id/textView1" 
      android:layout_alignParentRight="true" 
      android:layout_marginRight="46dp" 
      android:text="Edit" 
      android:onClick="mondayintent" /> 

     <Button 
      android:id="@+id/button2" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/textView2" 
      android:layout_alignBottom="@+id/textView2" 
      android:layout_alignLeft="@+id/button1" 
      android:text="Edit" /> 

     <Button 
      android:id="@+id/button3" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/textView3" 
      android:layout_alignBottom="@+id/textView3" 
      android:layout_alignLeft="@+id/button2" 
      android:text="Edit" /> 

     <Button 
      android:id="@+id/button4" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/textView4" 
      android:layout_alignBottom="@+id/textView4" 
      android:layout_alignLeft="@+id/button3" 
      android:text="Edit" /> 

     <Button 
      android:id="@+id/button5" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/textView5" 
      android:layout_alignBottom="@+id/textView5" 
      android:layout_alignLeft="@+id/button4" 
      android:text="Edit" /> 

     <Button 
      android:id="@+id/button6" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/textView6" 
      android:layout_alignBottom="@+id/textView6" 
      android:layout_alignLeft="@+id/button5" 
      android:text="Edit" /> 

     <Button 
      android:id="@+id/button7" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/textView7" 
      android:layout_alignBottom="@+id/textView7" 
      android:layout_alignLeft="@+id/button6" 
      android:text="Edit" /> 
</RelativeLayout> 

und die zweite Xml zu, die in einer anderen Aktivität zu erreichen im Versuch:

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="20dp" 
     android:textSize="40sp" 
     android:text="Monday" /> 

    <EditText 
     android:id="@+id/editText1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_below="@+id/textView1" 
     android:layout_marginTop="36dp" 
     android:layout_toLeftOf="@+id/textView1" 
     android:ems="3" 
     android:inputType="time" /> 

    <EditText 
     android:id="@+id/editText2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignBaseline="@+id/editText1" 
     android:layout_alignBottom="@+id/editText1" 
     android:layout_centerHorizontal="true" 
     android:ems="3" 
     android:inputType="time" > 
     <requestFocus /> 
    </EditText> 

     <Spinner 
     android:id="@+id/profileSelector" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 

     android:layout_alignBottom="@+id/editText2" 
     android:layout_toRightOf="@+id/textView1" 
     android:ems="3" 
     android:prompt="@string/profile" 
     android:entries="@array/profileSelector"/> 
</RelativeLayout> 

schließlich der Code, die beide unterstützt:

package com.example.hush; 

import android.os.Bundle; 
import android.app.Activity; 
import android.content.Intent; 
import android.view.Menu; 
import android.widget.Button; 
import android.view.View.OnClickListener; 

public class MainActivity extends Activity { 
     Intent clickedDay; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.mainlayout); 
     Button mondayEdit=(Button)findViewById(R.id.button1); 
    } 

    public void mondayintent() 
    { 
     clickedDay= new Intent(this,Monday.class); 
     startActivity(clickedDay); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 
} 

zweiten Aktivitätscode:

package com.example.hush; 

import android.app.Activity; 
import android.os.Bundle; 
import android.widget.Button; 

public class Monday extends Activity{   

    @Override 
    public void onCreate(Bundle savedInstanceState){ 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.monday); 
    } 
} 

Im Folgenden werde ich mein Android-manifest.xml

hinzugefügt haben

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.hush" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="8" 
     android:targetSdkVersion="17" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity 
      android:name="com.example.hush.MainActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" />  
       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity 
      android:name="com.example.hush.Monday" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="com.example.hush.Monday" />  
       <category android:name="android.intent.category.DEFAULT" /> 
      </intent-filter> 
     </activity>    
    </application>  
</manifest> 

Answer 1

Sie benötigen eine andere Tätigkeit wie dies in der OnClickListener() der Taste rufen

Button mondayEdit= (Button)findViewById(R.id.button1); 
    mondayEdit.setOnClickListener(new OnClickListener() 
    { public void onClick(View v) 
     { 
      Intent intent = new Intent(main.this, secondActivity.class); 
       startActivity(intent);  
       finish(); 
     } 
    }); 

Answer 2

Wahrscheinlich wird Ihr Code aufgrund der Android-Manifestdatei angezeigt. Versuchen Sie, die richtige Klasse in man hinzuzufügen ifest-Datei. Die erste Aktivität als Haupt- und andere als Standard. Andere Teile des Codes sind genau richtig.