java - 将包传递给 if 语句

Question

Activity Claims---->有2个按钮和一个textView(获取总金额)

Activity Project1 和 Petrol-----> 一个 editText 和一个保存按钮

Activity 声明

 button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialogRadio(a1);

            }
        });

        button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialogRadio(a2);

            }
        });

 public void AlertDialogRadio(final int k) {
         final CharSequence[] ClaimsModel = {"Project1", "Petrol"};

        AlertDialog.Builder alt_bld = new AlertDialog.Builder(getActivity());
        alt_bld.setTitle("Select a Claims");
        alt_bld.setSingleChoiceItems(ClaimsModel, -1, new DialogInterface
                .OnClickListener() {

            public void onClick(DialogInterface dialog, int item) {
                if (item == 0) {
                    Intent intent = new Intent(getActivity().getApplicationContext(), Project1.class);
                   intent.putExtra("k",k); 
                    startActivityForResult(intent, 0);
                } else if (item == 1) {
                    Intent intent = new Intent(getActivity().getApplicationContext(), Petrol.class);
                   intent.putExtra("k", k);
                    startActivityForResult(intent, 1);
                }

** Project1 或 Petrol，取决于...)**

 public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.project);
       text= (EditText)findViewById(R.id.editText1);
        Button save=(Button)findViewById(R.id.button12);

        save.setOnClickListener(new View.OnClickListener() {
            public void onClick(View arg0) {
                Intent returnIntent = new Intent();
                l="A";
                text = text.getText().toString();
                returnIntent.putExtra("text", text);
                returnIntent.putExtra("l", l);
                final int k1 = getIntent().getExtras().getInt("k");
                returnIntent.putExtra("k1", k1);
                setResult(Activity.RESULT_OK, returnIntent);
                finish();
            }
        });

    }

    @Override
    public void onBackPressed()
    {
        Intent returnIntent = new Intent();
        setResult(Activity.RESULT_CANCELED, returnIntent);
        finish();
    }

是否可以将bundle传递给if语句？我想将一个值传递给另一个案例，最后将两个值相加。我怎样才能实现这个目标？现在我只得到了值 as 和 bs，但没有得到值 amount。我确实相信它需要向两个 if 语句 添加一个 bundle...

Continue Claims.java...

 public void onActivityResult(int requestCode, int resultCode, Intent data) {
            int button = data.getIntExtra("k1", 0);  // to check which button was pressed
            long a=0;
            long as=0;
            long bs=0;
            String result;
            String result1;

            if (button == 1) {
                switch (requestCode) {
                    case 0:
                        result = data.getStringExtra("text");
                        String b = data.getStringExtra("l");
                         as=Long.parseLong(result);
                        c.setText("            " + b + "------" + "RM " + result);
                        Toast.makeText(getActivity(),as+"", Toast.LENGTH_LONG).show();
                        break;

                    case 1:
                         result = data.getStringExtra("text");
                        String b1 = data.getStringExtra("l");
                         as=Long.parseLong(result);
                        c.setText("            " + b1 + "------" + "RM " + result);
                        Toast.makeText(getActivity(),as+"", Toast.LENGTH_LONG).show();
                        break;


            }
             if(button==2)
            {
                switch (requestCode) {
                    case 0:
                        result1 = data.getStringExtra("text");
                        String b = data.getStringExtra("l");
                         bs=Long.parseLong(result1);
                        d.setText("            " + b + "------" + "RM " + result1);
                        Toast.makeText(getActivity(),bs+"", Toast.LENGTH_LONG).show();
                        break;

                    case 1:
                        result1 = data.getStringExtra("text");
                        String b1 = data.getStringExtra("l");
                         bs=Long.parseLong(result1);
                        d.setText("            " + b1 + "------" + "RM " + result1);
                        Toast.makeText(getActivity(),bs+"", Toast.LENGTH_LONG).show();
                        break;

                }

            }

      else if(requestCode==CAMERA_REQUEST_CODE)
            {

            }

            long amount=as+bs;
            Toast.makeText(getActivity(),amount+"", Toast.LENGTH_LONG).show();

我指的是How can i pass a string value, that has been created in an if statement, through a bundle inside another if statement?但答案对我来说很不清楚。

claim 图片

toast 应该显示 1 12 13，但我得到 1 12 12。 似乎无法添加值 1!

Answer 1

您应该将在 onActivityResult 中传递的值存储在 Activity 的变量中，然后直接读取 Toast 的这些变量。

public class Claims{
    long a, as, bs;

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        int button = data.getIntExtra("k1", 0);
        String result;

        if (button == 1) {
            result = data.getStringExtra("text");
            as=Long.parseLong(result);
        } else if(button==2) {
            result = data.getStringExtra("text");
            bs=Long.parseLong(result1);
        }

        long amount=as+bs;
        Toast.makeText(getActivity(),amount+"", Toast.LENGTH_LONG).show();
    }
}

不过，您仍然需要根据您的标准初始化您的值。