- package com.example.viewexcercises;
- import android.os.Bundle;
- import android.view.View;
- import android.R.layout;
- import android.app.Activity;
- import android.view.Menu;
- public class MainActivity extends Activity implements View.OnClickListener,View.OnSystemUiVisibilityChangeListener{
- private View main;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- main=getLayoutInflater().inflate(R.layout.activity_main,null);
- setContentView(main);
- main.setOnClickListener(this);
- //刚开始为可见状态,也是默认状态
- main.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
- }
- @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 void onSystemUiVisibilityChange(int visibility) {
- // TODO Auto-generated method stub
- }
- @Override
- public void onClick(View v) {
- // TODO Auto-generated method stub
- int status=main.getSystemUiVisibility();
- if (status==View.SYSTEM_UI_FLAG_LOW_PROFILE) {
- //虚拟按键将被隐藏,且不占空间
- main.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
- }
- else if(status==View.SYSTEM_UI_FLAG_HIDE_NAVIGATION){
- main.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
- }
- else if (status==View.SYSTEM_UI_FLAG_VISIBLE) {
- //虚拟按键被隐藏,但占一定空间
- main.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
- }
- }
- }