activity_main.xml:
ActionBarHiddenActivity.java:
package com.example.demoactionbar;import android.app.ActionBar;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.widget.Button;public class ActionBarHiddenActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final ActionBar bar = getActionBar(); final Button button = (Button)findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if(bar.isShowing()){ bar.hide(); button.setText("显示动作栏"); }else{ bar.show(); button.setText("隐藏动作栏"); } } }); } @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; }} AndroidManifest.xml: