Hi Guys, Maybe you all are expert in terms of using RecyclerView in android. This blog is simple example for using filter option with RecyclerView adapter. As for now you will instantiate RecyclerView and set the adapter to RecyclerView as following way. RecyclerView list = (RecyclerView) findViewById(R.id.list); list.setLayoutManager(new LinearLayoutManager(this)); list.setHasFixedSize(true); ArrayList<Number> numbers = new ArrayList<>(); String ONEs[] = {"ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN"}; String TENs[] = {"ZERO", "TEN", "TWENTY", "THIRTY", "FOURTY", "FIFTY", "SIXTY", "SEVENTY", "EIGHTY", "NINETY", "HUNDRED"}; String HUNDREDS[] = {"ZERO", "HUNDRED", "TWO HUND...
The SharedPreferences class provides a general framework that allows you to save and retrieve persistent key-value pairs of primitive data types. You can use SharedPreferences to save any primitive data: booleans, floats, ints, longs, and strings. This data will persist across user sessions (even if your application is killed).
To get a SharedPreferences object for your application, use one of two methods:
getSharedPreferences() - Use this if you need multiple preferences files identified by name, which you specify with the first parameter.
getPreferences() - Use this if you need only one preferences file for your Activity. Because this will be the only preferences file for your Activity, you don't supply a name.
To write values:
Call edit() to get a SharedPreferences.Editor.
Add values with methods such as putBoolean() andputString().
Commit the new values with commit()
To read values, use SharedPreferences methods such as getBoolean() and getString().
To put values in Shared Preferences
To get values from Shared Preferences
To get a SharedPreferences object for your application, use one of two methods:
getSharedPreferences() - Use this if you need multiple preferences files identified by name, which you specify with the first parameter.
getPreferences() - Use this if you need only one preferences file for your Activity. Because this will be the only preferences file for your Activity, you don't supply a name.
To write values:
Call edit() to get a SharedPreferences.Editor.
Add values with methods such as putBoolean() andputString().
Commit the new values with commit()
To read values, use SharedPreferences methods such as getBoolean() and getString().
To put values in Shared Preferences
SharedPreferences values = PreferenceManager.getDefaultSharedPreferences (MainActivity.this); SharedPreferences.Editor editor = values.edit(); String name = editText1.getText().toString(); editor.putString("Name", name); editor.putInt("Int", 1); editor.putBoolean("boolean", true); editor.putFloat("float", 1.1f); editor.putLong("long", 1L); editor.commit();
To get values from Shared Preferences
SharedPreferences values = PreferenceManager.getDefaultSharedPreferences(this); String Name = values.getString("Name", "null"); int i = values.getInt("int", 10); boolean b = values.getBoolean("boolean", false); float f= values.getFloat("float", 0.0f); long l = values.getLong("long", 0);
Here is an example:
main.xml
MainActivity.java
Run the program and feel the output friends.
main.xml
MainActivity.java
package com.android.sharedPreferences; import android.app.Activity; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.PreferenceManager; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; public class ExActivity extends Activity { EditText editText1; Button submit; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); editText1 = (EditText) findViewById(R.id.editText1); submit = (Button) findViewById(R.id.submit); //Intent submit.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub // shared preference SharedPreferences values = PreferenceManager .getDefaultSharedPreferences(MainActivity.this); SharedPreferences.Editor editor = values.edit(); String name = editText1.getText().toString(); editor.putString("Name", name); editor.putInt("Int", 1); editor.putBoolean("boolean", true); editor.putFloat("float", 1.1f); editor.putLong("long", 1L); editor.commit(); // Intent i = new Intent(MainActivity.this,Second.class); startActivity(i); } }); } }second.xml
Second.java
package com.android.sharedPreferences; import android.app.Activity; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.PreferenceManager; import android.widget.TextView; public class Second extends Activity { TextView name; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.second); name = (TextView) findViewById(R.id.textview2); // shared preference SharedPreferences values = PreferenceManager .getDefaultSharedPreferences(this); String Name = values.getString("Name", "null"); int i = values.getInt("int", 10); boolean b = values.getBoolean("boolean", false); float f = values.getFloat("float", 0.0f); long l = values.getLong("long", 0); name.setText(Name+" \n\n"+"int is \n\n"+i+"\n\n"+"boolean is \n\n"+b+"\n\n"+"float is \n\n"+f+"\n\n"+"long is \n\n"+l); } }Sample Manifest
Run the program and feel the output friends.
Comments
Post a Comment