MainActivity如下:

package cc.c;

import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.app.Activity;
import android.content.Context;
/**
 * Demo描述:
 * 1 软键盘状态的切换
 * 2 强制隐藏输入法键盘
 */
public class MainActivity extends Activity {
	private EditText mEditText;
    private Button mButton;
    private Context mContext;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		init();
	}
	
	private void init(){
		mContext=this;
		mEditText=(EditText) findViewById(R.id.editText);
		mButton=(Button) findViewById(R.id.button);
		mButton.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				//toggleInput(mContext);
				hideInput(mContext,mEditText);
			}
		});
	}
	
	/**
	 * 切换软键盘的状态
	 * 如当前为收起变为弹出,若当前为弹出变为收起
	 */
	private void toggleInput(Context context){
		InputMethodManager inputMethodManager =
		(InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
		inputMethodManager.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
	}
	
	/**
	 * 强制隐藏输入法键盘
	 */
	private void hideInput(Context context,View view){
		InputMethodManager inputMethodManager =
		(InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);
		inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
	}


}

main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <EditText
        android:id="@+id/editText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:hint="Input here" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@id/editText"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="15dp"
        android:hint="Button" />

</RelativeLayout>