Android软键盘研究

Android软键盘研究： 1.利用按钮弹出软键盘。 2.程序启动后直接弹出软键盘。

1.由Button的OnClick事件调出软键盘和隐藏软键盘。具体代码如下：

public class test extends Activity implements OnClickListener{ 

Button bt; 

/** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { 

super.onCreate(savedInstanceState); 

// setContentView(R.layout.main); 

LinearLayout l=new LinearLayout(this); LinearLayout.LayoutParams ll=new LinearLayout.LayoutParams( 

LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT 

); bt=new Button(this); bt.setId(123); bt.setText("出来啦！！！"); bt.setOnClickListener(this); /*bt.setOnClickListener(new OnClickListener(){ 

public void onClick(View v) { 

InputMethodManager m=(InputMethodManager) bt.getContext() 

getSystemService(INPUT_METHOD_SERVICE); 

m.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS); 

} 

});*/ 

l.addView(bt, ll); this.setContentView(l); 

} 

public void onClick(View v) { 

Log.e("TAG", "in..................."); 

InputMethodManager m=(InputMethodManager) bt.getContext() 

getSystemService(INPUT_METHOD_SERVICE); 

m.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS); 

// m.showSoftInput(findViewById(123), InputMethodManager.SHOW_FORCED); 

} 

} 

 

 

2.程序启动后直接弹出软键盘，不能直接在OnCreate中设置，必须等View绘制事件完毕才可以弹出，需要用到Timer辅助实现，代码如下。

public class chick extends Activity { 

/** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { 

super.onCreate(savedInstanceState); 

// setContentView(R.layout.main); 

LinearLayout l=new LinearLayout(this); l.setOrientation(LinearLayout.VERTICAL); LinearLayout.LayoutParams ll=new LinearLayout.LayoutParams( 

LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT 

); bt=new Button(this); bt.setId(123); bt.setText("出来吧！！！"); /*bt.setOnClickListener((OnClickListener) this); 

bt.setOnClickListener(new OnClickListener(){ 

public void onClick(View v) { 

InputMethodManager m = (InputMethodManager)bt.getContext() 

getSystemService(INPUT_METHOD_SERVICE); m.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS); 

} 

});*/ 

Timer timer = new Timer(); timer.schedule(new TimerTask() { 

@Override public void run() { 

Log.e("TAG", "run"); InputMethodManager imm = (InputMethodManager)bt.getContext().getSystemService(INPUT_METHOD_SERVICE); 

imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS); Toast.makeText(chick.this, "show", Toast.LENGTH_SHORT).show(); 

} 

}, 1000); 

l.addView(bt, ll); 

this.setContentView(l); 

} 

Button bt; 

}

 

 

http://dev.10086.cn/cmdn/bbs/viewthread.php?tid=20359