Android开发之软键盘用法实例分析

package com.example.dd; 
import android.app.Activity; 
import android.content.Context; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.inputmethod.InputMethodManager; 
import android.widget.Button; 
import android.widget.EditText; 
public class MainActivity extends Activity { 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    final EditText ed2 = (EditText) findViewById(R.id.editText2);
    Button b1 = (Button) findViewById(R.id.button1); 
    b1.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View v) { 
        ed2.requestFocus(); 
        show(ed2); 
      } 
    });
    Button b2 = (Button) findViewById(R.id.button2);
    b2.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        toggle();
      }
    });
  }
  private void show(EditText ed2) {
    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.showSoftInput(ed2, InputMethodManager.SHOW_IMPLICIT);
  }
  private void toggle() {
    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.toggleSoftInput(0, 0);
  }
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }
}