Android点名系统

package com.example.ex_example_00;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collection;

import java.util.List;

import java.util.Random;

import android.os.Bundle;

import android.app.Activity;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

import android.util.Log;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.TextView;

public class MainActivity extends Activity implements OnClickListener {

String[] AllDate = {"张三","李四","王五","赵六","器懂","聪明"};

ArrayList<String> AllList = new ArrayList<String>();

ArrayList<String> Hadlist = new ArrayList<String>();

TextView tv1 ;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

tv1 = (TextView)findViewById(R.id.textView1);

findViewById(R.id.button1).setOnClickListener(this);

}

private void add() {

SharedPreferences preferences = getPreferences(0);

String hadCalled = preferences.getString("name", "");

String[] hadCallstr = hadCalled.split(",");

List<String> asList = Arrays.asList(AllDate);

AllList.addAll(asList);

List<String> hadcalllist = Arrays.asList(hadCallstr);

Hadlist.addAll(hadcalllist);

AllList.removeAll(Hadlist);

Random random = new Random();

Editor edit = preferences.edit();

if (AllList.size()==AllDate.length||AllList.size()==0) {

int nextInt = random.nextInt(AllDate.length);

String name = AllDate[nextInt];

edit.putString("name", name);

tv1.setText(name);

}else {

int nextInt = random.nextInt(AllList.size());

String name = AllList.get(nextInt);

edit.putString("name", name+","+hadCalled);

Log.e("name", name+","+hadCalled);

tv1.setText(name);

}

edit.commit();

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.button1:

add();

break;

default:

break;

}

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