带菜单项的标签栏应用程序
我正在使用标签栏的Android应用程序，我想将项目添加到菜单栏，但是当我单击它调用MainActivity onOptionsItemSelected而不是TabActivity上的项目。 我该如何解决这个问题？
这是MainActivity代码
package com.example.TabApplication;
import android.app.TabActivity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TabHost;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.Toast;
public class MainActivity extends TabActivity implements OnTabChangeListener {
android.widget.TabHost tabHost;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Get TabHost Refference
tabHost = getTabHost();
// Set TabChangeListener called when tab changed
tabHost.setOnTabChangedListener(this);
TabHost.TabSpec spec;
Intent intent;
/************* TAB1 ************/
intent = new Intent().setClass(this, FirstActivity.class);
spec = tabHost.newTabSpec("First").setIndicator("tab1")
.setContent(intent);
tabHost.addTab(spec);
/************* TAB2 ************/
intent = new Intent().setClass(this, SecondActivity.class);
spec = tabHost.newTabSpec("Second").setIndicator("tab2")
.setContent(intent);
tabHost.addTab(spec);
/************* TAB3 ************/
intent = new Intent().setClass(this, ThirdActivity.class);
spec = tabHost.newTabSpec("Third").setIndicator("tab3")
.setContent(intent);
tabHost.addTab(spec);
/************* TAB4 ************/
intent = new Intent().setClass(this, FourthActivity.class);
spec = tabHost.newTabSpec("Fourth").setIndicator("tab4")
.setContent(intent);
tabHost.addTab(spec);
/************* TAB5 ************/
intent = new Intent().setClass(this, FifthActivity.class);
spec = tabHost.newTabSpec("Fifth").setIndicator("tab5")
.setContent(intent);
tabHost.addTab(spec);
}
@Override
public void onTabChanged(String tabId) {
// TODO Auto-generated method stub
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main,menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_add_task:
return true;
default:
return false;
}
}
这是FirstActivity代码
package com.example.TabApplication;
import mydear.db.TaskContract;
import mydear.db.TaskDBHelper;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.RadioButton;
import android.widget.Toast;
import android.widget.ViewFlipper;
public class FirstActivity extends Activity {
private TaskDBHelper helper;
ViewFlipper vf;
ListView lvItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_add_task:
//Do somthing
return true;
default:
return false;
}
}
private void Display() {
helper = new TaskDBHelper(FirstActivity.this);
SQLiteDatabase sqlDB = helper.getReadableDatabase();
String[] pro={
"_id",
"name",
"date"
};
Cursor cursor = sqlDB.query(TaskContract.TABLE,
pro,
null, null, null, null, null);
TodoCursorAdapter todoAdapter = new TodoCursorAdapter(this, cursor,0);
lvItems.setAdapter(todoAdapter);
}
}
在TabActivity中使用setOnTabChangedListener 。
static TabHost tabHost;
tabHost = getTabHost();
tabHost.setOnTabChangedListener(new OnTabChangeListener() {
@Override
public void onTabChanged(String arg0) {
//your code
}
});
为菜单创建一个单独的xml，并将适当的tools:context值分配给xml文件。 例如，这是MainActivity的main.xml菜单。
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.catalog.MainActivity">
<item android:id="@+id/action_settings" android:title="@string/action_settings"
android:orderInCategory="100" android:showAsAction="never" />
像这样在你的单独的XML菜单中更改tools:context
tools:context="com.example.catalog.YourCallingActivity"