Android：如何使用单个按钮执行多个任务 [英] Android : how to use single button for multiple task

问题描述

我有1个活动按钮。我想将此1按钮用于多个任务。

I have 1 button in activity. i want to use this 1 button for multiple task.

那我该怎么办？

• 如果我第一次按此按钮，则更改为2按钮

• If i pressed 1st time this button then it's change 2 button

如果我第二次按此按钮，则会更新我的数据

if i pressed 2nd time then it's update my data

但它只能在第一次工作，而在第二次却不工作

but it's only work 1st time 2nd time it's not work

查看我的代码我尝试了什么

Intent extras = getIntent();
        {
            if (extras.hasExtra("edit")) {
                if (extras.getStringExtra("edit").equals("home")) {

                    etCompanyName.setEnabled(false);
                    etWebsite.setEnabled(false);
                    etEmail.setEnabled(false);
                    etPhoneHome.setEnabled(false);
                    etPhonePrimary.setEnabled(false);
                    etAddressLine1.setEnabled(false);
                    etAddressLine2.setEnabled(false);
                    etCity.setEnabled(false);
                    spStates.setEnabled(false);
                    etZip.setEnabled(false);
                    spContries.setEnabled(false);
                    //1st time use hear 
              txtSave.setText(getResources().getString(R.string.label_edit));
                    txtClose.setText(getResources().getString(R.string.label_back));
                    txtSave.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                    txtSave.setText(getResources().getString(R.string.label_add));
                            txtClose.setText(getResources().getString(R.string.label_cancel));

                            etCompanyName.setEnabled(true);
                            etWebsite.setEnabled(true);
                            etEmail.setEnabled(true);
                            etPhoneHome.setEnabled(true);
                            etPhonePrimary.setEnabled(true);
                            etAddressLine1.setEnabled(true);
                            etAddressLine2.setEnabled(true);
                            etCity.setEnabled(true);
                            spStates.setEnabled(true);
                            etZip.setEnabled(true);
                            spContries.setEnabled(true);
                        }
                    });
                    if (extras != null) {
                        Company value = (Company) extras.getSerializableExtra("company");
                        etCompanyName.setText(value.getName());
                        etWebsite.setText(value.getWebsite());
                        etEmail.setText(value.getEmail());
                        etPhoneHome.setText(value.getPhoneHome());
                        etPhonePrimary.setText(value.getPhonePrimary());
                        etAddressLine1.setText(value.getAddressLine1());
                        etAddressLine2.setText(value.getAddressLine2());
                        etCity.setText(value.getCity());
                        etZip.setText(value.getZipcode());
                    }
                } else {
                    //2nd time use hear 
                    txtSave.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Company company = new Company();
                            company.setName(etCompanyName.getText().toString().trim());
                            company.setWebsite(etWebsite.getText().toString().trim());
                            company.setEmail(etEmail.getText().toString().trim());
                            company.setPhoneHome(etPhoneHome.getText().toString().trim());
                            company.setPhonePrimary(etPhonePrimary.getText().toString().trim());
                            company.setAddressLine1(etAddressLine1.getText().toString().trim());
                            company.setAddressLine2(etAddressLine2.getText().toString().trim());
                            company.setZipcode(etZip.getText().toString().trim());
                            company.setCity(etCity.getText().toString().trim());
                            company.setState(spStates.getSelectedItem().toString());
                            company.setCountry(spContries.getSelectedItem().toString());
                            company.setDate(Util.getInstance(AddCompanyActivity.this).getCurrentDate());

                            long isUpdated = myDb.updateCompany(company);

                            if (isUpdated != -1) {
                                Toast.makeText(getApplicationContext(), "Company Update Successfully: " + isUpdated, Toast.LENGTH_SHORT).show();
                            } else {
                                Toast.makeText(getApplicationContext(), "Something wrong", Toast.LENGTH_SHORT).show();
                            }
                            finish();
                        }
                    });
                }
            }
        }

您可以看到我的上面的代码，我可以使用 txtSave 按钮执行2个任务，但只更改两个按钮，然后我将更改数据并单击按钮，则无法执行

You can see my above code i can used txtSave button for perform 2 task but it's only change two buttons and i'll change data and click on button then it's can't perform

推荐答案

尝试这种方式，首先在活动类文件上声明全局变量，如下所示：

Try this way, first declare global variable on your activity class file like below :

int count = 0;

然后添加您的点击侦听器，如下所示：

After that add your click listener like that:

yourButton.setOnClickListener(v -> {
            if (count == 0) { // the first click
                count++;
                // do your stuff

            }else { // the second click
                count = 0; // initialize the count to limit the button click just for the first and the second time only
                // do your stuff
            }

        });

这篇关于Android：如何使用单个按钮执行多个任务的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！