Day10_27

概述packagecom.example.day10_26;importjava.util.Map;importandroid.os.Bundle;importandroid.support.v7.app.ActionBarActivity;importandroid.text.TextUtils;importandroid.view.View;importandroid.widget.Button;importandroid.widget.EditText;importandroid.wi

package com.example.day10_26;import java.util.Map;import androID.os.Bundle;import androID.support.v7.app.ActionBaractivity;import androID.text.TextUtils;import androID.vIEw.VIEw;import androID.Widget.button;import androID.Widget.EditText;import androID.Widget.Toast;public class MainActivity extends ActionBaractivity {    private EditText et1;    private EditText et2;    private button bu1;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_main);        et1 = (EditText) findVIEwByID(R.ID.et1);        et2 = (EditText) findVIEwByID(R.ID.et2);        bu1 = (button) findVIEwByID(R.ID.bu1);        Map<String, String> userInfo = SPSaveQQ.getUserInfo(this);        if (userInfo != null) {            et1.setText(userInfo.get("account"));            et2.setText(userInfo.get("pasSEOrd"));        }    }    public voID Click(VIEw vIEw) {        // Toast.makeText(MainActivity.this, "登录成功", Toast.LENGTH_SHORT);        switch (vIEw.getID()) {        case R.ID.bu1:            String account = et1.getText().toString().trim();            String password = et2.getText().toString();            if (TextUtils.isEmpty(account)) {                Toast.makeText(MainActivity.this, "请输入QQ账号", Toast.LENGTH_SHORT)                        .show();                return;            }            if (TextUtils.isEmpty(password)) {                Toast.makeText(MainActivity.this, "请输入密码", Toast.LENGTH_SHORT).show();                return;            }            Toast.makeText(MainActivity.this, "登录成功", Toast.LENGTH_SHORT).show();            boolean isSaveSuccee = SPSaveQQ.saveUserInfo(MainActivity.this,                    account, password);            if (isSaveSuccee) {                Toast.makeText(MainActivity.this, "保存成功", Toast.LENGTH_SHORT).show();            } else {                Toast.makeText(MainActivity.this, "保存失败", Toast.LENGTH_SHORT).show();            }            break;        default:            break;        }    }}

package com.example.day10_26;import java.io.fileinputStream;import java.io.fileNotFoundException;import java.io.fileOutputStream;import java.io.IOException;import java.util.HashMap;import java.util.Map;import androID.content.Context;import androID.content.SharedPreferences;public class SPSaveQQ {    /**     * 保存数据     *      * @param context     * @param account     * @param password     * @return     */    public static boolean saveUserInfo(Context context, String account,            String password) {        SharedPreferences sp = context.getSharedPreferences("data",                Context.MODE_PRIVATE);        SharedPreferences.Editor edit = sp.edit();        edit.putString("username", account);        edit.putString("pwd", password);        edit.commit();        return true;    }    public static Map<String, String> getUserInfo(Context context) {        SharedPreferences sp = context.getSharedPreferences("data", Context.MODE_PRIVATE);        String account = sp.getString("username", null);        String password = sp.getString("pwd", null);        Map<String,String> userMap = new HashMap<String, String>();        userMap.put("account", account);        userMap.put("pasSEOrd", password);        return userMap;    }}

<relativeLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"    xmlns:tools="http://schemas.androID.com/tools"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent"    androID:paddingBottom="@dimen/activity_vertical_margin"    androID:paddingleft="@dimen/activity_horizontal_margin"    androID:paddingRight="@dimen/activity_horizontal_margin"    androID:paddingtop="@dimen/activity_vertical_margin"    tools:context="com.example.homework2.MainActivity" >        <TextVIEw        androID:ID="@+ID/tv1"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_margintop="90dp"        androID:text="账号"        androID:textSize="30sp"         androID:background="#FFFFFF"        />    <EditText        androID:ID="@+ID/et1"        androID:layout_wIDth="200sp"        androID:layout_height="wrap_content"        androID:layout_alignBottom="@+ID/tv1"        androID:layout_alignParentRight="true"        androID:layout_aligntop="@+ID/tv1"        androID:layout_toRightOf="@+ID/tv1"        androID:phoneNumber="true"        androID:background="#FFFFFF"        androID:textSize="20sp" >    </EditText>        <TextVIEw        androID:ID="@+ID/tv2"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_margintop="140sp"        androID:text="密码"        androID:textSize="30sp"         androID:background="#FFFFFF"        />        <EditText        androID:ID="@+ID/et2"        androID:layout_wIDth="200sp"        androID:layout_height="wrap_content"        androID:layout_alignBottom="@+ID/tv2"        androID:layout_alignParentRight="true"        androID:layout_aligntop="@+ID/tv2"        androID:layout_toRightOf="@+ID/tv2"        androID:password="true"        androID:background="#FFFFFF"        androID:textSize="20sp" >    </EditText>     <TextVIEw         androID:ID="@+ID/tv3"         androID:layout_wIDth="wrap_content"         androID:layout_height="wrap_content"         androID:layout_below="@+ID/bt1"         androID:layout_centerHorizontal="true"         androID:layout_margintop="98dp"         androID:textSize="30sp" />     <ImageVIEw                  androID:layout_wIDth="45sp"         androID:layout_height="45sp"         androID:layout_above="@+ID/et1"         androID:layout_centerHorizontal="true"         androID:src="@drawable/ic_launcher"         androID:layout_marginBottom="18dp" />     <button         androID:ID="@+ID/bu1"         androID:layout_wIDth="match_parent"         androID:layout_height="wrap_content"         androID:layout_alignleft="@+ID/tv2"         androID:layout_below="@+ID/tv2"         androID:layout_margintop="69dp"         androID:background="#63B8FF"         androID:onClick="Click"         androID:text="登录"         androID:textSize="30sp" />    </relativeLayout>

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