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anddev.org • View topic - Explicit Intent For Result Problem

Explicit Intent For Result Problem

Put your problem here if it does not fit any of the other categories.

Explicit Intent For Result Problem

Postby grimx » Mon Dec 28, 2009 10:19 pm

What i'm tring to do is ParentActivity start SubActivity forResult on the push of the Open button
and thats where it force closes.
Help.


ParentActivity.java
Code: Select all
package com.grimx.ParentActivity;

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

public class ParentActivity extends Activity implements View.OnClickListener{
   private static final int SHOW_SUBACTIVITY = 1;
    Button open_btn;
    TextView textView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        textView = (TextView)findViewById(R.id.textView);
        open_btn = (Button)findViewById(R.id.open);
        open_btn.setOnClickListener(this);
    }

   @Override
   public void onClick(View v) {
      if(v.getId() == R.id.open) {
         textView.setText("Open Button Was Clicked");
         Intent my_intent = new Intent(ParentActivity.this, SubActivity.class);
         startActivityForResult(my_intent, SHOW_SUBACTIVITY);
         //startActivity(my_intent);
      }
   }
   
   

   protected void onActivityResult(int requestCode, int resultCode, Intent data) {
      
      super.onActivityResult(requestCode, resultCode, data);
      
      switch(requestCode) {
         case(SHOW_SUBACTIVITY):
         {
            if(resultCode == Activity.RESULT_OK) {
            String stuff = data.getDataString();
            textView.setText(stuff);
            }   
         }
         break;
         }
   }
}



SubActivity
Code: Select all
package com.grimx.ParentActivity;

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

public class SubActivity extends Activity implements View.OnClickListener{
   protected final int RETURN_CODE = 1;
   Button send_btn;
   TextView textView;
   
   public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sub);
       
        textView = (TextView)findViewById(R.id.textView);
        send_btn = (Button)findViewById(R.id.send);
        send_btn.setOnCreateContextMenuListener(this);
       
    }

   @Override
   public void onClick(View v) {
      String data = null;
      
      if(v.getId() == R.id.send) {
         //data = (String)textView.getText();
         Intent myIntent = new Intent();
         myIntent.putExtra("data", textView.getText().toString());
         
         setResult(RETURN_CODE, myIntent);
         finish();
      }
   }

}


AndroidManifest.xml
Syntax: [ Download ] [ Hide ]
Using xml Syntax Highlighting
  1.  
  2. <?xml version="1.0" encoding="utf-8"?>
  3.  
  4. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  5.  
  6.      package="com.grimx.ParentActivity"
  7.  
  8.      android:versionCode="1"
  9.  
  10.      android:versionName="1.0">
  11.  
  12.     <application android:icon="@drawable/icon" android:label="@string/app_name">
  13.  
  14.         <activity android:name=".ParentActivity"
  15.  
  16.                  android:label="@string/app_name">
  17.  
  18.             <intent-filter>
  19.  
  20.                 <action android:name="android.intent.action.MAIN" />
  21.  
  22.                 <category android:name="android.intent.category.LAUNCHER" />
  23.  
  24.             </intent-filter>
  25.  
  26.         </activity>
  27.  
  28.         <activity android:name=".SubActivity"
  29.  
  30.                         android:label="@string/sub_name">
  31.  
  32.         </activity>
  33.  
  34.     </application>
  35.  
  36.     <uses-sdk android:minSdkVersion="3" />
  37.  
  38.  
  39.  
  40. </manifest>
  41.  
  42.  
Parsed in 0.001 seconds, using GeSHi 1.0.8.4
grimx
Junior Developer
Junior Developer
 
Posts: 20
Joined: Sat Dec 05, 2009 12:47 am

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Postby grimx » Mon Dec 28, 2009 10:22 pm

Sorry for the double post
when i clicked submit, i hit it twice.
grimx
Junior Developer
Junior Developer
 
Posts: 20
Joined: Sat Dec 05, 2009 12:47 am

Postby grimx » Tue Dec 29, 2009 2:45 am

Ok i fixed most of it, now my problem is tring to return a string from SubActivity.

ParentActivity
Code: Select all
package com.grimx.ParentActivity;

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

public class ParentActivity extends Activity implements View.OnClickListener{
   protected static final int SHOW_SUBACTIVITY = 101;
    Button open_btn;
    TextView textView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        textView = (TextView)findViewById(R.id.textView);
        open_btn = (Button)findViewById(R.id.open);
        open_btn.setOnClickListener(this);
    }

   @Override
   public void onClick(View v) {
      if(v.getId() == R.id.open) {
         textView.setText("Open Button Was Clicked");
         Intent my_intent = new Intent(ParentActivity.this, SubActivity.class);
         startActivityForResult(my_intent, SHOW_SUBACTIVITY);
      }
   }

   protected void onActivityResult(int requestCode, int resultCode, Intent data) {
      
      super.onActivityResult(requestCode, resultCode, data);
      String stuff = null;
      if(requestCode == SHOW_SUBACTIVITY){
         textView.setText("return value: " + data.getDataString());
      }
      else {
         textView.setText("DID NOT GET YOUR INPUT!!!!!");
      }
   }
}


SubActivity
Code: Select all
package com.grimx.ParentActivity;

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

public class SubActivity extends Activity implements View.OnClickListener{
   protected static final int RETURN_CODE = 201;
   Button send_btn;
   EditText textEdit;
   
   public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sub);
       
        textEdit = (EditText)findViewById(R.id.textView);
        send_btn = (Button)findViewById(R.id.send);
        send_btn.setOnClickListener(this);
       
    }

   @Override
   public void onClick(View v) {
      String str = null;
      
      if(v.getId() == R.id.send) {
         str = textEdit.getText().toString();
         Intent myIntent = new Intent(str);
         setResult(RETURN_CODE, myIntent);
         finish();
      }
   }

}


AndroidManifest
Syntax: [ Download ] [ Hide ]
Using xml Syntax Highlighting
  1.  
  2. <?xml version="1.0" encoding="utf-8"?>
  3.  
  4. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  5.  
  6.      package="com.grimx.ParentActivity"
  7.  
  8.      android:versionCode="1"
  9.  
  10.      android:versionName="1.0">
  11.  
  12.     <application android:icon="@drawable/icon" android:label="@string/app_name">
  13.  
  14.         <activity android:name=".ParentActivity"
  15.  
  16.                  android:label="@string/app_name">
  17.  
  18.             <intent-filter>
  19.  
  20.                 <action android:name="android.intent.action.MAIN" />
  21.  
  22.                 <category android:name="android.intent.category.LAUNCHER" />
  23.  
  24.             </intent-filter>
  25.  
  26.         </activity>
  27.  
  28.         <activity android:name=".SubActivity"
  29.  
  30.                         android:label="@string/sub_name">
  31.  
  32.                         <intent-filter>
  33.  
  34.                                 <action android:name="android.intent.action.VIEW" />
  35.  
  36.                                 <category android:name="android.intent.category.DEFAULT" />
  37.  
  38.                         </intent-filter>
  39.  
  40.         </activity>
  41.  
  42.     </application>
  43.  
  44.     <uses-sdk android:minSdkVersion="3" />
  45.  
  46.  
  47.  
  48. </manifest>
  49.  
  50.  
Parsed in 0.002 seconds, using GeSHi 1.0.8.4
[syntax="xml"]
grimx
Junior Developer
Junior Developer
 
Posts: 20
Joined: Sat Dec 05, 2009 12:47 am

Postby grimx » Tue Dec 29, 2009 3:48 am

ok i got.
Problem Solved.

i needed this in ParentActivity:

String stuff = null;
switch(requestCode) {
case SHOW_SUBACTIVITY:
{
if(resultCode == RESULT_OK) {
stuff = data.getStringExtra("Return"); // "Return" being the name of the extra data.
textView.setText("your returned value: " + stuff);
}

break;
}
}




and needed this in SubActivity:

str = textEdit.getText().toString(); // Get the string from the EditText
Intent myIntent = new Intent();
myIntent.putExtra("Return", str); // Give the the data to be returned a name "Return" along with the data it's self.
// Inside ParentActivity use this name "Return" to get the extra data .

It works, so do i undestand this correctly?
grimx
Junior Developer
Junior Developer
 
Posts: 20
Joined: Sat Dec 05, 2009 12:47 am

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