android如何实时监听edittext的内容，对sqlite里的内容进行查询？

//借助TextWatcher类
private TextWatcher watcher = new TextWatcher(){  
        @Override  
        public void afterTextChanged(Editable s) {  
            // TODO Auto-generated method stub            
        }  
        @Override  
        public void beforeTextChanged(CharSequence s, int start, int count,  
                int after) {  
            // TODO Auto-generated method stub               
        }  
        @Override  
        public void onTextChanged(CharSequence s, int start, int before,  
                int count) {  
            //Log.d("TAG","[TextWatcher][onTextChanged]"+s);   
            //do something          
        }          
    };  
//在 EditText 上注册该 TextWatcher 实例 
EditText et = (EditText)findViewById(R.id.edit);  
et.addTextChangedListener(watcher);

给控件添加监听事件，如下：
editText.addTextChangedListener(new TextWatcher() {

@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {

}

@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {

}

@Override
public void afterTextChanged(Editable s) {

}
});
希望对你有帮助。