Question

我真的很挣扎，所以我转向你们好人：）

目标：在OnCreate期间在AutoCompleteTextView中设置一个值并关闭键盘。

活动：包含2个视图，AutoCompleteTextView和一个Button

在OnCreate中我称之为

private void SoftKeyboardClose()
{
    IBinder windowToken;
    AutoCompleteTextView actv = (AutoCompleteTextView) findViewById(R.id.ac_city);
    Button myBtn = (Button) findViewById(R.id.btn_search);

    windowToken = myBtn.getWindowToken();

    if (windowToken == null)
    {
        windowToken = this.getWindow().getDecorView().getWindowToken();
    }

    if (windowToken == null)
    {
        windowToken = findViewById(R.id.ac_city).getWindowToken();
    }

    if (windowToken == null)
    {
        windowToken = new View(this).getWindowToken();
    }


    // close it
    InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

    if (inputManager == null)
    {
        Log.e(TAG, "inputmanage is null");
    } else if (windowToken == null)
    {
        Log.e(TAG, "getWindowToken is null");
    } else
    {
        inputManager.hideSoftInputFromWindow(windowToken, 0);
    }

    myBtn.requestFocus();
    if (myBtn.hasFocus())
    {
        Log.e(TAG, "success - btn has focus");
    } else
    {
        Log.e(TAG, "fail - btn doesn't have focus");
    }
}

getWindowToken始终返回null。

为了回应hpedrorodrigues，我尝试了这个;

public class ZZZActivity extends Activity
{
private static final String[] COUNTRIES = new String[]{"Belgium", "France", "Italy", "Germany", "Spain"};

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_zzz);

    final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.activity_zzz, COUNTRIES);
    final AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.myACTV);
    textView.setAdapter(adapter);
    closeKeyboard(this);
}


public void closeKeyboard(final Activity activity)
{
    final View view = activity.getCurrentFocus();

    if (view != null)
    {
        final InputMethodManager manager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
        manager.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
    }
}

}

activity.getCurrentFocus（）返回null。

Answer 1

可能焦点可能在您的按钮而不是AutoCompleteTextView上。

您可以使用此方法关闭键盘：

public void closeKeyboard(final Context context) {
    View view = context.getCurrentFocus();

    if (view == null) {
        view = new View(context);
    }

    final InputMethodManager manager = (InputMethodManager)
        context.getSystemService(Context.INPUT_METHOD_SERVICE);

    manager.hideSoftInputFromWindow(
        view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS
    );
}

代码与我的建议：

public class CountriesActivity extends Activity {

    @Override
    protected void onCreate(@Nullable final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.countries);

        final ArrayAdapter<String> adapter = new ArrayAdapter<String>(
            this, android.R.layout.simple_dropdown_item_1line, COUNTRIES);

        final AutoCompleteTextView textView = (AutoCompleteTextView)
             findViewById(R.id.countries_list);

        textView.setAdapter(adapter);

        YourUiUtil.closeKeyboard(this);
    }

    private static final String[] COUNTRIES = new String[] {
        "Belgium", "France", "Italy", "Germany", "Spain"
    };
}

可以找到更多详细信息here。

Answer 2

试试这个

Worksheet_Change

请参阅此内容 - https://stackoverflow.com/a/19083268/4741746

AutoCompleteTextView - 以编程方式设置值并关闭软键盘

2 个答案: