android - Get string from resources using name

activity_main.xml

 <?xml version="1.0" encoding="utf-8"?> <RelativeLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="16dp"     tools:context=".MainActivity"     android:background="#e4e3de"     >     <TextView         android:id="@+id/tv"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:textSize="40sp"         android:textColor="#000000"         android:textStyle="bold"         />     <TextView         android:id="@+id/tv_second"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:textSize="40sp"         android:textColor="#418910"         android:textStyle="bold"         android:layout_below="@id/tv"         /> </RelativeLayout> 

res/values/strings.xml

 <resources>      <string name="app_name">Android Example</string>     <string name="title_activity_settings">Settings</string>     <string name="title_activity_main">Android Example - Get String From Resources Using Name</string>      <string name="country">Bangladesh</string>     <string name="city">Khulna</string>  </resources> 

MainActivity.java

 package com.cfsuman.me.androidcodesnippets;  import android.app.Activity; import android.content.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.RelativeLayout; import android.widget.TextView;   public class MainActivity extends AppCompatActivity {      private Context mContext;     private Activity mActivity;      private RelativeLayout mRelativeLayout;     private TextView mTextView;     private TextView mTextViewSecond;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get the application context         mContext = getApplicationContext();          // Get the activity         mActivity = MainActivity.this;          // Get the widgets reference from XML layout         mRelativeLayout = (RelativeLayout) findViewById(R.id.rl);         mTextView = (TextView) findViewById(R.id.tv);         mTextViewSecond = (TextView) findViewById(R.id.tv_second);          // Set the first TextView text from string resource by resource id         mTextView.setText("Country : " + getResources().getString(R.string.country));          // Set the second TextView text from string resources by resource name         mTextViewSecond.setText("City : " + getStringFromResourcesByName("city"));    }      // Custom method to get a string resource by resource name     private String getStringFromResourcesByName(String resourceName){         /*             getPackageName()                 Return the name of this application's package.         */         // Get the application package name         String packageName = getPackageName();          /*             getResources()                 Return a Resources instance for your application's package.         */         /*             public int getIdentifier (String name, String defType, String defPackage)                 Return a resource identifier for the given resource name. A fully qualified resource                 name is of the form "package:type/entry". The first two components (package and type)                 are optional if defType and defPackage, respectively, are specified here.                  Note: use of this function is discouraged. It is much more efficient to retrieve                 resources by identifier than by name.              Parameters                 name String: The name of the desired resource.                  defType String: Optional default resource type to find, if "type/" is                     not included in the name. Can be null to require an explicit type.                  defPackage String: Optional default package to find, if "package:" is not                     included in the name. Can be null to require an explicit package.             Returns                 int : int The associated resource identifier. Returns 0 if no such resource                     was found. (0 is not a valid resource ID.)         */         // Get the string resource id by name         int resourceId = getResources().getIdentifier(resourceName,"string",packageName);          // Return the string value         return getString(resourceId);     } }