Imitation iPhone password lock effect

Source code introduction

An iPhone-like password lock with animation effects.
Source code running screenshot

Source code snippet

 public   class DBSharedPreferences { 
      
 private Context context;
 public   static   final String _NAME = "DIARY_DB" ;
 public   static   final String _USERD = "_USERD" ; 
  
 public DBSharedPreferences(Context context) {
 this .context = context;
 } 
  
 // /////////////////////////////////////////////String///////////////////////////////////////////////////////  
 public   void putString(String key, String value) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
        Editor editor = sp.edit();
        editor.putString(key, value);
 editor.commit();
 } 
  
 public String getString(String key) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
 return sp.getString(key, "nothing" );
 } 
  
 // /////////////////////////////////////////////Integer////////////////////////////////////////////////////////  
 public   void putInteger(String key, int value) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
        Editor editor = sp.edit();
        editor.putInt(key, value);
 editor.commit();
 } 
  
 public Integer getInteger(String key) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
 return sp.getInt(key, - 1 );
 } 
  
 // /////////////////////////////////////////////Boolean///////////////////////////////////////////////////////  
 public   void putBoolean(String key, boolean value) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
        Editor editor = sp.edit();
        editor.putBoolean(key, value);
 editor.commit();
 } 
  
 public   boolean getBoolean(String key) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
 return sp.getBoolean(key, false );
 } 
  
 // /////////////////////////////////////////////Long///////////////////////////////////////////////////////  
 public   void putLong(String key, long value) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
        Editor editor = sp.edit();
        editor.putLong(key, value);
 editor.commit();
 } 
  
 public   long getLong(String key) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
 return sp.getLong(key, - 1 );
 } 
  
 // /////////////////////////////////////////////Float////////////////////////////////////////////////////////  
 public   void putFloat(String key, float value) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
        Editor editor = sp.edit();
        editor.putFloat(key, value);
 editor.commit();
 } 
  
 public   float getFloat(String key) {
        SharedPreferences sp = context.getSharedPreferences(_NAME, 1 );
 return sp.getFloat(key, 0 .0F);
 }
 }