Android開發(fā)筆記SQLite優(yōu)化記住密碼功能
更新時間：2017年07月05日 11:10:37 作者：alm
這篇文章主要為大家詳細介紹了Android開發(fā)筆記SQLite優(yōu)化記住密碼功能，具有一定的參考價值，感興趣的小伙伴們可以參考一下
本文實例為大家分享了Android SQLite優(yōu)化記住密碼功能的具體代碼，供大家參考，具體內(nèi)容如下
package com.example.alimjan.hello_world;
/**
* Created by alimjan on 7/4/2017.
*/
import com.example.alimjan.hello_world.bean.UserInfo;
import com.example.alimjan.hello_world.dataBase.UserDBHelper;
import com.example.alimjan.hello_world.Utils.DateUtil;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnFocusChangeListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemSelectedListener;
public class class_4_2_3 extends AppCompatActivity implements OnClickListener, OnFocusChangeListener {
private RadioGroup rg_login;
private RadioButton rb_password;
private RadioButton rb_verifycode;
private EditText et_phone;
private TextView tv_password;
private EditText et_password;
private Button btn_forget;
private CheckBox ck_remember;
private Button btn_login;
private int mRequestCode = 0;
private int mType = 0;
private boolean bRemember = false;
private String mPassword = "111111";
private String mVerifyCode;
private UserDBHelper mHelper;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.code_4_2_3);
rg_login = (RadioGroup) findViewById(R.id.rg_login);
rb_password = (RadioButton) findViewById(R.id.rb_password);
rb_verifycode = (RadioButton) findViewById(R.id.rb_verifycode);
et_phone = (EditText) findViewById(R.id.et_phone);
tv_password = (TextView) findViewById(R.id.tv_password);
et_password = (EditText) findViewById(R.id.et_password);
btn_forget = (Button) findViewById(R.id.btn_forget);
ck_remember = (CheckBox) findViewById(R.id.ck_remember);
btn_login = (Button) findViewById(R.id.btn_login);
rg_login.setOnCheckedChangeListener(new RadioListener());
ck_remember.setOnCheckedChangeListener(new CheckListener());
et_phone.addTextChangedListener(new HideTextWatcher(et_phone));
et_password.addTextChangedListener(new HideTextWatcher(et_password));
btn_forget.setOnClickListener(this);
btn_login.setOnClickListener(this);
et_password.setOnFocusChangeListener(this);
ArrayAdapter<String> typeAdapter = new ArrayAdapter<String>(this,
R.layout.item_select, typeArray);
typeAdapter.setDropDownViewResource(R.layout.item_dropdown);
Spinner sp_type = (Spinner) findViewById(R.id.sp_type);
sp_type.setPrompt("請選擇用戶類型");
sp_type.setAdapter(typeAdapter);
sp_type.setSelection(mType);
sp_type.setOnItemSelectedListener(new TypeSelectedListener());
}
private class RadioListener implements RadioGroup.OnCheckedChangeListener {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (checkedId == R.id.rb_password) {
tv_password.setText("登錄密碼：");
et_password.setHint("請輸入密碼");
btn_forget.setText("忘記密碼");
ck_remember.setVisibility(View.VISIBLE);
} else if (checkedId == R.id.rb_verifycode) {
tv_password.setText(" 驗證碼：");
et_password.setHint("請輸入驗證碼");
btn_forget.setText("獲取驗證碼");
ck_remember.setVisibility(View.INVISIBLE);
}
}
}
private String[] typeArray = {"個人用戶", "公司用戶"};
class TypeSelectedListener implements OnItemSelectedListener {
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
mType = arg2;
}
public void onNothingSelected(AdapterView<?> arg0) {
}
}
private class CheckListener implements CompoundButton.OnCheckedChangeListener {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (buttonView.getId() == R.id.ck_remember) {
bRemember = isChecked;
}
}
}
private class HideTextWatcher implements TextWatcher {
private EditText mView;
private int mMaxLength;
private CharSequence mStr;
public HideTextWatcher(EditText v) {
super();
mView = v;
mMaxLength = ViewUtil.getMaxLength(v);
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
mStr = s;
}
@Override
public void afterTextChanged(Editable s) {
if (mStr == null || mStr.length() == 0)
return;
if ((mStr.length() == 11 && mMaxLength == 11) ||
(mStr.length() == 6 && mMaxLength == 6)) {
ViewUtil.hideOneInputMethod(class_4_2_3.this, mView);
}
}
}
@Override
public void onClick(View v) {
String phone = et_phone.getText().toString();
if (v.getId() == R.id.btn_forget) {
if (phone==null || phone.length()<11) {
Toast.makeText(this, "請輸入正確的手機號", Toast.LENGTH_SHORT).show();
return;
}
if (rb_password.isChecked() == true) {
Intent intent = new Intent(this, class_4_2_3_1.class);
intent.putExtra("phone", phone);
startActivityForResult(intent, mRequestCode);
} else if (rb_verifycode.isChecked() == true) {
mVerifyCode = String.format("%06d", (int)(Math.random()*1000000%1000000));
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("請記住驗證碼");
builder.setMessage("手機號"+phone+"，本次驗證碼是"+mVerifyCode+"，請輸入驗證碼");
builder.setPositiveButton("好的", null);
AlertDialog alert = builder.create();
alert.show();
}
} else if (v.getId() == R.id.btn_login) {
if (phone==null || phone.length()<11) {
Toast.makeText(this, "請輸入正確的手機號", Toast.LENGTH_SHORT).show();
return;
}
if (rb_password.isChecked() == true) {
if (et_password.getText().toString().equals(mPassword) != true) {
Toast.makeText(this, "請輸入正確的密碼", Toast.LENGTH_SHORT).show();
return;
} else {
loginSuccess();
}
} else if (rb_verifycode.isChecked() == true) {
if (et_password.getText().toString().equals(mVerifyCode) != true) {
Toast.makeText(this, "請輸入正確的驗證碼", Toast.LENGTH_SHORT).show();
return;
} else {
loginSuccess();
}
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == mRequestCode && data!=null) {
//用戶密碼已改為新密碼
mPassword = data.getStringExtra("new_password");
}
}
//從修改密碼頁面返回登錄頁面，要清空密碼的輸入框
@Override
protected void onRestart() {
et_password.setText("");
super.onRestart();
}
@Override
protected void onResume() {
super.onResume();
mHelper = UserDBHelper.getInstance(this, 2);
mHelper.openWriteLink();
}
@Override
protected void onPause() {
super.onPause();
mHelper.closeLink();
}
private void loginSuccess() {
String desc = String.format("您的手機號碼是%s，類型是%s。恭喜你通過登錄驗證，點擊“確定”按鈕返回上個頁面",
et_phone.getText().toString(), typeArray[mType]);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("登錄成功");
builder.setMessage(desc);
builder.setPositiveButton("確定返回", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
builder.setNegativeButton("我再看看", null);
AlertDialog alert = builder.create();
alert.show();
if (bRemember) {
UserInfo info = new UserInfo();
info.phone = et_phone.getText().toString();
info.password = et_password.getText().toString();
info.update_time = DateUtil.getCurDateStr("yyyy-MM-dd HH:mm:ss");
mHelper.insert(info);
}
}
//為什么光標進入密碼框事件不選onClick？因為要點兩下才會觸發(fā)onClick動作（第一下是切換焦點動作）
@Override
public void onFocusChange(View v, boolean hasFocus) {
String phone = et_phone.getText().toString();
if (v.getId() == R.id.et_password) {
if (phone.length() > 0 && hasFocus == true) {
UserInfo info = mHelper.queryByPhone(phone);
if (info != null) {
et_password.setText(info.password);
}else{
et_password.setText("");
}
}
}
}
public static void startHome(Context mContext) {
Intent intent = new Intent(mContext, class_4_2_3.class);
mContext.startActivity(intent);
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:focusable="true"
android:focusableInTouchMode="true"
android:orientation="vertical"
android:padding="5dp" >
<RadioGroup
android:id="@+id/rg_login"
android:layout_width="match_parent"
android:layout_height="60dp"
android:orientation="horizontal" >
<RadioButton
android:id="@+id/rb_password"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:checked="true"
android:gravity="left|center"
android:text="密碼登錄"
android:textColor="@color/black"
android:textSize="17sp" />
<RadioButton
android:id="@+id/rb_verifycode"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:checked="false"
android:gravity="left|center"
android:text="驗證碼登錄"
android:textColor="@color/black"
android:textSize="17sp" />
</RadioGroup>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp" >
<TextView
android:id="@+id/tv_type"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:gravity="center"
android:text=" 我是："
android:textColor="@color/black"
android:textSize="17sp" />
<Spinner
android:id="@+id/sp_type"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toRightOf="@+id/tv_type"
android:gravity="left|center"
android:spinnerMode="dialog" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp" >
<TextView
android:id="@+id/tv_phone"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:gravity="center"
android:text="手機號碼："
android:textColor="@color/black"
android:textSize="17sp" />
<EditText
android:id="@+id/et_phone"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:layout_toRightOf="@+id/tv_phone"
android:background="@drawable/editext_selector"
android:gravity="left|center"
android:hint="請輸入手機號碼"
android:inputType="number"
android:maxLength="11"
android:textColor="@color/black"
android:textColorHint="@color/grey"
android:textCursorDrawable="@drawable/text_cursor"
android:textSize="17sp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp" >
<TextView
android:id="@+id/tv_password"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:gravity="center"
android:text="登錄密碼："
android:textColor="@color/black"
android:textSize="17sp" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toRightOf="@+id/tv_password" >
<EditText
android:id="@+id/et_password"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:background="@drawable/editext_selector"
android:gravity="left|center"
android:hint="請輸入密碼"
android:inputType="numberPassword"
android:maxLength="6"
android:textColor="@color/black"
android:textColorHint="@color/grey"
android:textCursorDrawable="@drawable/text_cursor"
android:textSize="17sp" />
<Button
android:id="@+id/btn_forget"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="right"
android:gravity="center"
android:text="忘記密碼"
android:textColor="@color/black"
android:textSize="17sp" />
</FrameLayout>
</RelativeLayout>
<CheckBox
android:id="@+id/ck_remember"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:button="@drawable/checkbox_selector"
android:checked="false"
android:padding="10dp"
android:text="記住密碼"
android:textColor="@color/black"
android:textSize="17sp" />
<Button
android:id="@+id/btn_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="登錄"
android:textColor="@color/black"
android:textSize="22sp" />
</LinearLayout>
package com.example.alimjan.hello_world;
/**
* Created by alimjan on 7/4/2017.
*/
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.Toast;
public class class_4_2_3_1 extends AppCompatActivity implements OnClickListener {
private EditText et_password_first;
private EditText et_password_second;
private EditText et_verifycode;
private String mVerifyCode;
private String mPhone;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.code_4_2_3_1);
et_password_first = (EditText) findViewById(R.id.et_password_first);
et_password_second = (EditText) findViewById(R.id.et_password_second);
et_verifycode = (EditText) findViewById(R.id.et_verifycode);
findViewById(R.id.btn_verifycode).setOnClickListener(this);
findViewById(R.id.btn_confirm).setOnClickListener(this);
mPhone = getIntent().getStringExtra("phone");
}
@Override
public void onClick(View v) {
if (v.getId() == R.id.btn_verifycode) {
if (mPhone==null || mPhone.length()<11) {
Toast.makeText(this, "請輸入正確的手機號", Toast.LENGTH_SHORT).show();
return;
}
mVerifyCode = String.format("%06d", (int) (Math.random() * 1000000 % 1000000));
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("請記住驗證碼");
builder.setMessage("手機號"+mPhone+"，本次驗證碼是"+mVerifyCode+"，請輸入驗證碼");
builder.setPositiveButton("好的", null);
AlertDialog alert = builder.create();
alert.show();
} else if (v.getId() == R.id.btn_confirm) {
String password_first = et_password_first.getText().toString();
String password_second = et_password_second.getText().toString();
if (password_first==null || password_first.length()<6 ||
password_second==null || password_second.length()<6) {
Toast.makeText(this, "請輸入正確的新密碼", Toast.LENGTH_SHORT).show();
return;
}
if (password_first.equals(password_second) != true) {
Toast.makeText(this, "兩次輸入的新密碼不一致", Toast.LENGTH_SHORT).show();
return;
}
if (et_verifycode.getText().toString().equals(mVerifyCode) != true) {
Toast.makeText(this, "請輸入正確的驗證碼", Toast.LENGTH_SHORT).show();
return;
} else {
Toast.makeText(this, "密碼修改成功", Toast.LENGTH_SHORT).show();
Intent intent = new Intent();
intent.putExtra("new_password", password_first);
setResult(Activity.RESULT_OK, intent);
finish();
}
}
}
public static void startHome(Context mContext) {
Intent intent = new Intent(mContext, class_4_2_3_1.class);
mContext.startActivity(intent);
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:focusable="true"
android:focusableInTouchMode="true"
android:orientation="vertical"
android:padding="5dp" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp" >
<TextView
android:id="@+id/tv_password_first"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:gravity="center"
android:text="輸入新密碼："
android:textColor="@color/black"
android:textSize="17sp" />
<EditText
android:id="@+id/et_password_first"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:layout_toRightOf="@+id/tv_password_first"
android:background="@drawable/editext_selector"
android:gravity="left|center"
android:hint="請輸入新密碼"
android:inputType="numberPassword"
android:maxLength="11"
android:textColor="@color/black"
android:textColorHint="@color/grey"
android:textCursorDrawable="@drawable/text_cursor"
android:textSize="17sp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp" >
<TextView
android:id="@+id/tv_password_second"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:gravity="center"
android:text="確認新密碼："
android:textColor="@color/black"
android:textSize="17sp" />
<EditText
android:id="@+id/et_password_second"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:layout_toRightOf="@+id/tv_password_second"
android:background="@drawable/editext_selector"
android:gravity="left|center"
android:hint="請再次輸入新密碼"
android:inputType="numberPassword"
android:maxLength="11"
android:textColor="@color/black"
android:textColorHint="@color/grey"
android:textCursorDrawable="@drawable/text_cursor"
android:textSize="17sp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp" >
<TextView
android:id="@+id/tv_verifycode"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:gravity="center"
android:text=" 驗證碼："
android:textColor="@color/black"
android:textSize="17sp" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toRightOf="@+id/tv_verifycode" >
<EditText
android:id="@+id/et_verifycode"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:background="@drawable/editext_selector"
android:gravity="left|center"
android:hint="請輸入驗證碼"
android:inputType="numberPassword"
android:maxLength="6"
android:textColor="@color/black"
android:textColorHint="@color/grey"
android:textCursorDrawable="@drawable/text_cursor"
android:textSize="17sp" />
<Button
android:id="@+id/btn_verifycode"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="right"
android:gravity="center"
android:text="獲取驗證碼"
android:textColor="@color/black"
android:textSize="17sp" />
</FrameLayout>
</RelativeLayout>
<Button
android:id="@+id/btn_confirm"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="確定"
android:textColor="@color/black"
android:textSize="22sp" />
</LinearLayout>
當輸入完手機號之后，點擊密碼編輯框時，從數(shù)據(jù)庫查看內(nèi)容，如果含有該號的密碼則自動添加，如果沒有則空。勾選記住密碼選項之后，如果登陸成功則保存到數(shù)據(jù)庫。
以上就是本文的全部內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持腳本之家。
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