Java 用户输入验证获胜'；不行！如果我点击submit（提交），即使进入窗口为空，仍然会添加| Android开发

我试图允许用户将自己添加到数据库中，但即使在没有输入的情况下，它仍然允许用户添加，有人能帮忙吗

我尝试过添加用户输入验证，但它似乎不起作用。这个问题可能很简单，但我只是一个初学者，没有什么经验，任何输入都会有帮助，谢谢

public class MainActivity extends AppCompatActivity {


    private Button button;
    private EditText IdText;
    private EditText NameText;
    private EditText AgeText;
    private EditText WeightText;
    private EditText HeightText;
    private EditText ReachText;
    MyDBHandler dbHandler;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        IdText = (EditText) findViewById(R.id.IdText);
        NameText = (EditText) findViewById(R.id.NameText);
        HeightText = (EditText) findViewById(R.id.HeightText);
        AgeText = (EditText) findViewById(R.id.AgeText);
        WeightText = (EditText) findViewById(R.id.WeightText);
        ReachText = (EditText) findViewById(R.id.ReachText);
        button = (Button) findViewById(R.id.button);
        dbHandler = new MyDBHandler(this);
        AddData();


    }

    public void AddData() {

        button.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        boolean isInserted = dbHandler.insertData(IdText.getText().toString(),

                                NameText.getText().toString(),
                                AgeText.getText().toString(),
                                HeightText.getText().toString(),
                                WeightText.getText().toString(),
                                ReachText.getText().toString());
                        if (isInserted == true)
                            Toast.makeText(MainActivity.this, "Fighter added", Toast.LENGTH_LONG).show();
                        else
                            Toast.makeText(MainActivity.this, "Data not inserted", Toast.LENGTH_LONG).show();

                        if ((IdText.getText().toString()).isEmpty())
                        {
                            IdText.setError("Please fill out your ID");

                        }

                        else if ((NameText.getText().toString()).isEmpty())
                        {
                            NameText.setError("Please fill out your Name");

                        }

                        else if ((AgeText.getText().toString()).isEmpty())
                        {
                            AgeText.setError("Please fill out your Age");

                        }

                        else if ((HeightText.getText().toString()).isEmpty())
                        {
                            HeightText.setError("Please fill out your Height in centimeters");

                        }

                        else if ((WeightText.getText().toString()).isEmpty())
                        {
                            WeightText.setError("Please fill out your weight in kilos");

                        }

                        else if ((ReachText.getText().toString()).isEmpty())
                        {
                            ReachText.setError("Please fill out your reach in inches");

                        }







                    }
                }
        );
    }







    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu, menu);
        return true;
    }
}

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在添加项目之前，在开始处添加您的支票

同时在条件中添加

return

关键字，这样下面的代码就不会被执行

使用以下代码段：

 @Override
    public void onClick(View v) {
        if ((IdText.getText().toString()).isEmpty())
        {
            IdText.setError("Please fill out your ID");
            return;
        }

        else if ((NameText.getText().toString()).isEmpty())
        {
            NameText.setError("Please fill out your Name");
            return;
        }

        else if ((AgeText.getText().toString()).isEmpty())
        {
            AgeText.setError("Please fill out your Age");
            return;
        }

        else if ((HeightText.getText().toString()).isEmpty())
        {
            HeightText.setError("Please fill out your Height in centimeters");
            return;
        }

        else if ((WeightText.getText().toString()).isEmpty())
        {
            WeightText.setError("Please fill out your weight in kilos");
            return;
        }

        else if ((ReachText.getText().toString()).isEmpty())
        {
            ReachText.setError("Please fill out your reach in inches");
            return;
        }
        else{
            boolean isInserted = dbHandler.insertData(IdText.getText().toString(),

                    NameText.getText().toString(),
                    AgeText.getText().toString(),
                    HeightText.getText().toString(),
                    WeightText.getText().toString(),
                    ReachText.getText().toString());
            if (isInserted == true)
                Toast.makeText(MainActivity.this, "Fighter added", Toast.LENGTH_LONG).show();
            else
                Toast.makeText(MainActivity.this, "Data not inserted", Toast.LENGTH_LONG).show();
            }
    }

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不客气……如果答案有帮助的话，别忘了把它标为正确的。。