Java tutorial
//package com.java2s; import android.app.Activity; import android.content.Context; import android.view.View; import android.view.inputmethod.InputMethodManager; public class Main { public static void showInputKeyboard(Context context) { try { View view = ((Activity) context).getWindow().peekDecorView(); if (view != null && view.getWindowToken() != null) { InputMethodManager imm = (InputMethodManager) context .getSystemService(Context.INPUT_METHOD_SERVICE); imm.toggleSoftInput(0, InputMethodManager.SHOW_FORCED); imm.showSoftInput(view, 0); } } catch (Exception e) { e.printStackTrace(); } } }