Question

— This is my layout thus far for the input —

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

    <EditText
        android:id="@+id/etClassName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:layout_marginTop="10dp"
        android:layout_marginBottom="10dp"
        android:hint="@string/className"/>


    <EditText
        android:id="@+id/etAssignmentName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:ems="10" 
        android:hint="@string/assignmentName"/>

    <EditText
        android:id="@+id/etDueDate"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:layout_marginBottom="20dp"
        android:hint="@string/dueDate" />


    <EditText
        android:id="@+id/etNotes"
        android:layout_width="match_parent"
        android:layout_height="194dp"
        android:ems="10"
        android:inputType="textMultiLine"
        android:layout_marginBottom="5dp" 
        android:hint="@string/notes"/>


    <LinearLayout
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:orientation="horizontal">
        <Button
            android:id="@+id/bAddAssignments"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/addAssignment"
            android:layout_weight="1" />

        <Button
            android:id="@+id/bViewAssignments"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/viewAssignments" 
            android:layout_weight="1"/>
    </LinearLayout>
</LinearLayout>

— Clicking the add button brings you to this page which is supposed to list the assignment name that you can click to view your assignment —

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

    <ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="0.63" >
    </ListView>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <Button
            android:id="@+id/bNewAssignment"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/newAssignment" />

        <Button
            android:id="@+id/bdeleteAssignment"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/deleteAssignment" />
    </LinearLayout>

</LinearLayout>

My problem is that I don’t know how to populate the second layout when my first layout keeps track of the data. How does the second layout know what the user inputted etc in order to populate the listview

I currently have a dbadapter class(with helper class inside), an entry class(creates entry objects), and an assignmentclass(supposed to display listview)

Any Ideas, please?

Answer 1

Pass the data you need in an Intent bundle.

When you set the intent, put the data you need in ther next class as an extra (assuming strings here, but can be other forms):

Intent myIntent = new Intent(YourActivity.this, NewActivity.class);
myIntent.putExtra("Data1", data1var);
myIntent.putExtra("Data2", data2var);
YourActivity.this.startActivity(myIntent);

In the new class:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    Bundle extras = getIntent().getExtras();
    if (extras != null) {
        String value1 = extras.getString("Data1");
        String value2 = extras.getString("Data2");
    }
    //use your passed strings
}