关于程序信息，Menu功能菜单程序设计

来源：互联网发布：java图书管理系统界面编辑：程序博客网时间：2024/06/07 02:00
package com.wzc.ex03_17;import android.content.DialogInterface;import android.support.v7.app.AlertDialog;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        menu.add(0,0,0,R.string.app_about);        menu.add(0,1,1,R.string.str_exit);        return super.onCreateOptionsMenu(menu);    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        super.onOptionsItemSelected(item);        switch (item.getItemId()){            case 0:                // System.out.println(item.getItemId());                 wzcopenOptionsDialog();                break;            case 1:                wzcexitOptionsDialog();                break;        }        return true;    }    private void wzcexitOptionsDialog() {        new AlertDialog.Builder(this)                .setTitle(R.string.str_exit)                .setMessage(R.string.str_exit_words)                .setPositiveButton(R.string.str_exit,                        new DialogInterface.OnClickListener(){                            @Override                            public void onClick(DialogInterface dialogInterface, int i) {                                finish();                            }                        }                        ).show();    }    private void wzcopenOptionsDialog() {        new AlertDialog.Builder(this)                .setTitle(R.string.app_about)                .setMessage(R.string.app_about_msg)                .setPositiveButton(R.string.str_ok,                        new DialogInterface.OnClickListener(){                            @Override                            public void onClick(DialogInterface dialogInterface, int i) {                            }                        }                        ).show();    }}
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