Android中点击事件之KeyListener实现步骤

1. 编写布局

2. 设置事件

    etEmail.setKeyListener(new KeyListener() {
               @Override
               public int getInputType() {
                   return 0;
               }
               @Override
               public boolean onKeyDown(View view, Editable text, int keyCode, KeyEvent event) {
                   return false;
               }
               @Override
               public boolean onKeyUp(View view, Editable text, int keyCode, KeyEvent event) {
                   return false;
               }
               @Override
               public boolean onKeyOther(View view, Editable text, KeyEvent event) {
                   return false;
               }
               @Override
               public void clearMetaKeyState(View view, Editable content, int states) {
   
               }
           });
   

3. 处理事件

    etEmail.setKeyListener(new KeyListener() {
               @Override
               public int getInputType() {
                   return 0;
               }
               @Override
               public boolean onKeyDown(View view, Editable text, int keyCode, KeyEvent event) {
                   Log.i(TAG, "处理按键事件");
   		      return false;
               }
               @Override
               public boolean onKeyUp(View view, Editable text, int keyCode, KeyEvent event) {
                   return false;
               }
               @Override
               public boolean onKeyOther(View view, Editable text, KeyEvent event) {
                   return false;
               }
               @Override
               public void clearMetaKeyState(View view, Editable content, int states) {
   
               }
           });
   

4. 查看效果