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="#f1fbfc" > <TextView android:id="@+id/tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="30dp" android:layout_margin="10dp" android:padding="10dp" android:textStyle="bold" android:fontFamily="sans-serif-condensed" android:textColor="@color/textview_colors" /> <ToggleButton android:id="@+id/tb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textOn="Disable TextView" android:textOff="Enable TextView" android:layout_below="@id/tv" /> </RelativeLayout>
res/color/textview_colors.xml
<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_enabled="false" android:color="#9e9e9e" /> <item android:state_enabled="true" android:color="#56934d" /> </selector>
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.CompoundButton; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.ToggleButton; public class MainActivity extends AppCompatActivity { private Context mContext; private Activity mActivity; private RelativeLayout mRelativeLayout; private TextView mTextView; private ToggleButton mToggle; @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); mToggle = (ToggleButton) findViewById(R.id.tb); // Change the TextView text depending on enable disable if(mTextView.isEnabled()){ mTextView.setText("TextView is now Enabled."); // On the toggle button mToggle.setChecked(true); }else { mTextView.setText("TextView is now Disabled."); // Off the toggle button mToggle.setChecked(false); } // Set a check change listener for toggle button mToggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton compoundButton, boolean b) { if(b){ // If the toggle is on // Enable the TextView mTextView.setEnabled(true); mTextView.setText("TextView is now Enabled."); } else { // If the toggle is off // Disable the TextView mTextView.setEnabled(false); mTextView.setText("TextView is now Disabled."); } } }); } }
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