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;  }}