android - 停止 Android Activity ，使用 noHistory ="true"

Question

我已经在 Internet 上阅读了有关此主题的信息，但我还没有找到解决方案。 list 文件中的解决方案如 :noHistory="true"。我想要的是，在用户单击 AddNewItem 类中的保存按钮后，这会将用户重定向到 MainActivity 类，当用户单击后退按钮时，它将返回到 mainMenu，在我进行的每一步都不会返回制成。

这是我的 list 文件

 <activity
            android:name="com.example.shoppingapp.AddNewItems"
            android:label="" 
             android:noHistory="true">

        </activity>

这是我的主要 Activity >

public class MainActivity extends ListActivity {

    // The Intent is used to issue that an operation should
    // be performed

    Intent intent;
    TextView itemId;

    // The object that allows me to manipulate the database

    ShoppingDB shopdatabase = new ShoppingDB(this);

    // Called when the Activity is first called

    protected void onCreate(Bundle savedInstanceState) {
        // Get saved data if there is any

        super.onCreate(savedInstanceState);

        // Designate that edit_contact.xml is the interface used
        // is activity_main.xml

        setContentView(R.layout.activity_main);

        // Gets all the data from the database and stores it
        // in an ArrayList

        ArrayList<HashMap<String, String>> contactList =  shopdatabase.getAllItems();

        // Check to make sure there are contacts to display

        if(contactList.size()!=0) {

            // Get the ListView and assign an event handler to it

            ListView listView = getListView();
            listView.setOnItemClickListener(new OnItemClickListener() {

                public void onItemClick(AdapterView<?> parent, View view,int position, long id) {

                    // When an item is clicked get the TextView
                    // with a matching checkId

                    itemId = (TextView) view.findViewById(R.id.itemId);

                    // Convert that itemId into a String

                    String itemIdValue = itemId.getText().toString();   

                    // Signals an intention to do something
                    // getApplication() returns the application that owns
                    // this activity

                    Intent  theIndent = new Intent(getApplication(),EditItemList.class);

                    // Put additional data in for EditContact to use

                    theIndent.putExtra("itemId", itemIdValue); 

                    // Calls for EditContact

                    startActivity(theIndent); 

                                    }
            }); 

            // A list adapter is used bridge between a ListView and
            // the ListViews data

            // The SimpleAdapter connects the data in an ArrayList
            // to the XML file

            // First we pass in a Context to provide information needed
            // about the application
            // The ArrayList of data is next followed by the xml resource
            // Then we have the names of the data in String format and
            // their specific resource ids

            ListAdapter adapter = new SimpleAdapter( MainActivity.this,contactList, R.layout.item_list_entry, new String[] { "itemId","textAmount", "textItem"}, new int[] {R.id.itemId, R.id.textAmount, R.id.textItem});

            // setListAdapter provides the Cursor for the ListView
            // The Cursor provides access to the database data

            setListAdapter(adapter);


        }

    }


    public void callStartApp(View view){

        Intent startIntent = new Intent(getApplication(), StartingApp.class);

        startActivity(startIntent);

    }

    // When showAddContact is called with a click the Activity 
    // NewContact is called

    public void showAddItem(View view) {
        Intent theIntent = new Intent(getApplicationContext(), AddNewItems.class);
        startActivity(theIntent);
    }


}

这是我的 AddNewItem 类

public class AddNewItems extends Activity {

    // The EditText objects

        EditText textItem;
        EditText textAmount;
        EditText textPrice;
        EditText textPlace;

        ShoppingDB shopdatabase = new ShoppingDB(this);


@Override
public void onCreate(Bundle savedInstanceState) {

    // Get saved data if there is any

    super.onCreate(savedInstanceState);

    // Designate that add_new_item.xml is the interface used

    setContentView(R.layout.add_item);

    // Initialize the EditText objects

    textItem = (EditText) findViewById(R.id.textItem);
    textAmount = (EditText) findViewById(R.id.textAmount);
    textPrice = (EditText) findViewById(R.id.textPrice);
    textPlace = (EditText) findViewById(R.id.textPlace);


}
public void addNewItems(View view) {

    // Will hold the HashMap of values 

    HashMap<String, String> queryValuesMap =  new  HashMap<String, String>();

    // Get the values from the EditText boxes

    queryValuesMap.put("textItem", textItem.getText().toString());
    queryValuesMap.put("textAmount", textAmount.getText().toString());
    queryValuesMap.put("textPrice", textPrice.getText().toString());
    queryValuesMap.put("textPlace", textPlace.getText().toString());


    // Call for the HashMap to be added to the database

    shopdatabase.insertItem(queryValuesMap);

    // Call for MainActivity to execute

    this.callMainActivity(view);
}
public void callMainActivity(View view) {
    Intent theIntent = new Intent(getApplicationContext(), MainActivity.class);
    startActivity(theIntent);
}   
}

Answer 1

它重定向到 mainactivty 类-

Intent i = new Intent(this, MAinActivity.class);
    finish();
    startActivity(i);

对于主菜单-

Intent i = new Intent(this, abcActivity.class);
    finish();

在这里，我为您的 mainmenuActivity 编写了 abcActivity。在 abcActivity 的地方写下你的 menuActivity 类名。