java - 在继续执行语句之前检查 for 循环是否完成

Question

这里有一些问题。我创建了一个 EditText 数组，它工作正常。现在当其中一个 EditText 为空时出现错误。这是我的代码:

int[] textIDs = new int[] {R.id.etFirstName, R.id.etLastName, R.id.etEmail, R.id.etAddress, R.id.etCity, R.id.etRegion, R.id.etMobile, R.id.etLandLine, R.id.etYear, R.id.etMonth, R.id.etDay };
        for(int j=0; j<textIDs.length; j++) {
            EditText editText = (EditText) findViewById(textIDs[j]);
            if(editText.getText().toString().trim().equals(""))
            {
                 // editText is empty
                Toast.makeText(MainActivity.this, "Request cannot performed..\n Please ensure all fields are filled", Toast.LENGTH_SHORT).show();
                break;
            } 
            else 
            {
                 // editText is not empty
                Toast.makeText(MainActivity.this, "12", Toast.LENGTH_SHORT).show();
            }

使用这段代码的主要问题是循环继续执行这段代码的功能 Toast.makeText(MainActivity.this, "12", Toast.LENGTH_SHORT).show();继续在每个循环中显示。这个 Toast 在循环完成后有什么显示方式吗？

Answer 1

将它放在 for 循环之外..

boolean isNotEmpty = false;

    for(int j=0; j<textIDs.length; j++) {
                EditText editText = (EditText) findViewById(textIDs[j]);
                if(editText.getText().toString().trim().equals(""))
                {
                     // editText is empty
                    Toast.makeText(MainActivity.this, "Request cannot performed..\n Please ensure all fields are filled", Toast.LENGTH_SHORT).show();

                    isNotEmpty = false;   // Marking as Empty
                    break;
                } 
                else 
                {
                     // editText is not empty

                    isNotEmpty = true     // Marking as Non-Empty

                }
             }
    if (isNotEmpty){
    Toast.makeText(MainActivity.this, "12", Toast.LENGTH_SHORT).show();
    }