how to pass a 2 dimention array as an intent extra

2019-08-16 02:13发布

问题:

I pass 2d array [][] object as an intent extra to another activity, but its show error i can not be identifies what do i do?

     Bundle bundle = intent.getExtras();        
     SmsMessage[] msgs = null;
     String str = "";  
      if (bundle != null)
    {
        //---retrieve the SMS message received---
        Object[] pdus = (Object[]) bundle.get("pdus");
        msgs = new SmsMessage[pdus.length];            
        for (int i=0; i<msgs.length; i++){
            msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);                
            str += "SMS from " + msgs[i].getOriginatingAddress();                     
            str += " :";
            str += msgs[i].getMessageBody().toString();
            str += "\n"; 

String[][] xmlResponse2= null;
        String[] test = str.split("\n");
        xmlResponse2= new String[0][test.length];
        for (int i = 0; i < test.length; i++) {
            xmlResponse2[0][i]=test[i];

        }

     Intent l = new Intent(context,AgAppMenu.class);
        l.putExtra("msg",xmlResponse2[0][i]);
        l.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);   
            context.startActivity(l);

回答1:

Intent.putExtra does not accept 2 dimension array as per the following document http://developer.android.com/reference/android/content/Intent.html

I have check the source code of Intent.putExtra , It use Bundle Class to store data

http://developer.android.com/reference/android/os/Bundle.html

Here is Source code of Intent.java

  1. Intent.java http://gitorious.org/android-eeepc/base/blobs/fda6fae156e31a287e3cfbf66e51ea1405cdf479/core/java/android/content/Intent.java
  2. Bundle.java https://github.com/android/platform_frameworks_base/blob/master/core/java/android/os/Bundle.java

Bundle.java use "HashMap" to store the content,

Best of my knowledge it's not possible directly

you can use putParcelable method, you need to create your own class instanceof 2 dimension array.

one quick solution

String[] keys = createKeys(); 
String[] values = createValues(); 

(keys.length == values.length) 

bundle.putExtra("keys", keys); 
bundle.putExtra("values", values);