1，首先在佈局中新增  android:imeOptions="actionSearch

2，然後java程式碼中設定程式碼：

et_input_password.setOnEditorActionListener(new TextView.OnEditorActionListener() {

            @Override
            public boolean onEditorAction(TextView v, int actionId,
                                          KeyEvent event) {
                if ((actionId == 0 || actionId == 3) && event != null) {
                    LogUtil.E(et_input_password.getText().toString().trim());//寫你要做的事情
                    return true;
                }
                return false;

            }

        });