Databases
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    <p>Well you can just use the primary key. When you insert something into the database you get as a return value the primary key. You can add this to the Intent that opens the other Activity and that way refer back to the row you previously inserted.</p> <p><strong>Edit:</strong></p> <p>I don't know if you are working with and SQLiteDatabase Object or with a ContentProvider, but in any case the code would be pretty much the same. In this example I will work directly with an SQLiteDatabase Object, even though using ContentProviders is in most cases the better alternative.</p> <p>In your first Activity:</p> <pre><code>// When you perform an insert you get the id of the row which was just inserted. long id = sqliteDatabase.insert("some_table", null, contentValues); // The id will be -1 if an error occured if(id &gt;= 0) { ... } ... // When you start your second Activity you can add the id to the Intent Intent intent = new Intent(getApplicationContext(), SecondActivity.class); // The String is a tag with which you can later retrieve the id from the Intent. // Note that you should never hardcode String like that, use constants in your app. intent.putExtra("rowId", id); </code></pre> <p>In the onCreate Method of your second Activity you can retrieve the id:</p> <pre><code>@Override protected void onCreate (Bundle savedInstanceState) { // Check if the Activity has been created for the first time if(savedInstanceState == null) { // Retrieve the Intent with which the Activity was started Intent intent = getIntent(); long id = intent.getLongExtra ("rowId", -1); // If id is valid proceed if(id &gt;= 0) { Cursor cursor = sqliteDatabase.query("some_table", columns, "_id = ?", new String[] { String.valueOf(id) }, null, null, null, null); // Check if Cursor is valid and if yes read your data. if(cursor != null) { ... } } } } </code></pre>
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    1. USXaver Kapeller
    1. USXaver Kapeller
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    1. COthat is exactly my idea, to refer to the row by the primary key, but i don't know the code that permit to do that , coud you give details ! thanks
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      1. USUtman Alami
    2. COOf course, I will edit my answer.
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      1. USXaver Kapeller
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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