android - 如何自动将 ListView 字段的第一行传递给 EditText 字段

Question

我正在创建一个简单的应用程序，试图学习功能和实现基本功能。我的主要目标是让语音命令在我打开应用程序的地方工作，只需说转到下一页，然后它就会这样做等等。有没有办法使用 android studio 来做到这一点，因为我没有遇到任何例子。

我已经设法让语音识别正常工作，它在 ListView 中提供了文本语句的语音。我现在正在尝试创建一个带有登录页面的简单应用程序，用户可以在其中输入正确的凭据并继续到下一页，或者使用语音转文本来填写凭据，如果正确则自动转到下一页。

我的问题是是否有一种方法可以自动将 ListView 中的第一行语句传递到用户名字段(当前是 EditText 字段)，然后在 1-2 秒后自动按下登录按钮。我附上了主要的 java 文件来执行此操作，非常感谢您对代码的一些帮助。请注意，目前我只是使用用户名进行验证，密码字段并不重要。

ListView lv;
static final int check = 1111;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    lv = (ListView)findViewById(R.id.lvVoiceReturn);
    Button b = (Button)findViewById(R.id.bVoice);
    b.setOnClickListener(this);///////////////////
}

public void onButtonClick(View v)
{
    if (v.getId() == R.id.Blogin)
    {
        EditText a = (EditText)findViewById(R.id.TFusername);
        String str = a.getText().toString();


        //Go to the next 'Display' window or activity if the person enters the correct username which is not case sensitive
        if (str.equalsIgnoreCase("next"))
        {
            Intent userintent = new Intent(MainActivity.this, Display.class);
            startActivity(userintent);
        }
        else
        {
            Toast.makeText(getApplicationContext(), "Incorrect Information", Toast.LENGTH_SHORT).show();
        }
    }
}

@Override
public void onClick(View v) {
    Intent i = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    i.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    i.putExtra(RecognizerIntent.EXTRA_PROMPT, "Please Repeat Again");
    startActivityForResult(i, check);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == check && resultCode == RESULT_OK){
        ArrayList<String> results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
        lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, results));
        //??String selectedFromList = (lv.getItemAtPosition(position))////////
    }


    super.onActivityResult(requestCode, resultCode, data);
}

Answer 1

你可以这样做

a.setText((String)lv.getItemAtPosition(0));

Handler handler = new Handler();
handler.postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            b.performClick();
                        }
                    }, 2000);

第一行从 listView 的第一行设置 editText，然后是 handler执行事件 2000 毫秒，即 2 秒后。

完整代码:

ListView lv;
static final int check = 1111;
Button b;
EditText a;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    lv = (ListView)findViewById(R.id.lvVoiceReturn);
    b = (Button)findViewById(R.id.bVoice);
    a = (EditText)findViewById(R.id.TFusername);

    b.setOnClickListener(this);///////////////////
}

public void onButtonClick(View v)
{
    if (v.getId() == R.id.Blogin)
    {
        String str = a.getText().toString();


        //Go to the next 'Display' window or activity if the person enters the correct username which is not case sensitive
        if (str.equalsIgnoreCase("next"))
        {
            Intent userintent = new Intent(MainActivity.this, Display.class);
            startActivity(userintent);
        }
        else
        {
            Toast.makeText(getApplicationContext(), "Incorrect Information", Toast.LENGTH_SHORT).show();
        }
    }
}

@Override
public void onClick(View v) {
    Intent i = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    i.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    i.putExtra(RecognizerIntent.EXTRA_PROMPT, "Please Repeat Again");
    startActivityForResult(i, check);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == check && resultCode == RESULT_OK){
        ArrayList<String> results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
        lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, results));
        //??String selectedFromList = (lv.getItemAtPosition(position))////////

        a.setText((String)lv.getItemAtPosition(0));

Handler handler = new Handler();
handler.postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            b.performClick();
                        }
                    }, 2000);
    }


    super.onActivityResult(requestCode, resultCode, data);
}

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