android - 如果 EditText 不为空，则隐藏软键盘

Question

EditText当登录活动加载已填充的sharedPreferences数据时，我试图隐藏软件键盘。

我已经尝试过在其他问题中找到的这段代码，但它不起作用：

if(inputEmail.getText().toString().trim() != null){
    InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); 
    inputManager.hideSoftInputFromWindow(inputEmail.getWindowToken(),0);
}

你能给我一些解决这个问题的建议吗？

编辑：这是我的 XML 布局：

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:padding="10dip" >

    <LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" >

        <!--  View Title Label -->
        <TextView
            android:layout_width="0dp"
            android:layout_weight="2"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dip"
            android:text="LOGIN"
            android:textSize="25dip"
            android:textStyle="bold"
            android:textColor="#FFF" />

        <Button
            android:id="@+id/btnLinkToRegisterScreen"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1.37"
            android:background="#900099CC"
            android:text="Registrazione"
            android:textColor="#FFF"
            android:textStyle="bold" />

    </LinearLayout>

    <!--  Email Label -->
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Email o username" 
        android:textColor="#FFF" />

    <View 
        android:layout_width="fill_parent"
        android:layout_height="1dp"       
        android:background="#FFF" />

    <!--  Email TextField -->
    <EditText
        android:id="@+id/loginEmail"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="text"
        android:windowSoftInputMode="stateHidden"
        android:imeOptions="actionNext"
        android:background="#97FFFFFF"
        android:padding="5dp"
        android:layout_marginTop="5dp"/>

    <!--  Password Label -->
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dip"
        android:text="Password" 
        android:textColor="#FFF"/>

    <View 
        android:layout_width="fill_parent"
        android:layout_height="1dp"       
        android:background="#FFF" />

    <!--  Password TextField -->
    <EditText
        android:id="@+id/loginPassword"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textPassword"
        android:background="#97FFFFFF"
        android:padding="5dp"
        android:layout_marginTop="5dp"  />

    <CheckBox
        android:id="@+id/chkPref"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textColor="#FFFFFF"
        android:background="#80FFFFFF"
        android:text="Salva dati di accesso"
        android:checked="true"
        android:padding="5dp" 
        android:layout_marginTop="15dp"/>

    <!--  Login Button -->
    <Button
        android:id="@+id/btnLogin"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dip"
        android:text="Login"
        android:textColor="#FFF"
        android:background="#97000066" />

    </LinearLayout>

</ScrollView>

当我尝试隐藏键盘时，我仅在这种情况下使用 InputMethodManager，请帮助！

谢谢

EDIT-2：活动代码：

public class Login extends Activity 
{
String nomeGiocatore;
Intent intentRegistrazione;
JsonDB jParser = new JsonDB();
Button btnLogin;
Button btnLinkToRegister;
public static EditText inputEmail;
public static EditText inputPassword;
private CheckBox chkPref;

Editor editor;


@Override
public void onCreate(Bundle savedInstanceState) 
{    
    super.onCreate(savedInstanceState);
    setContentView(R.layout.login);

    // Elementi della UI
    inputEmail = (EditText) findViewById(R.id.loginEmail);
    inputPassword = (EditText) findViewById(R.id.loginPassword);
    btnLogin = (Button) findViewById(R.id.btnLogin);
    btnLinkToRegister = (Button) findViewById(R.id.btnLinkToRegisterScreen);
    chkPref = (CheckBox) findViewById(R.id.chkPref);

    chkPref.setTextColor(Color.WHITE);

    // utilizzo le sharedpreferences per salvare i dati del login e recuperarli alla successiva apertura dell'app
    SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", 0); // 0 -  private mode
    editor = pref.edit();



    // la tastiera viene nascosta se il campo è già compilato con i dati salvati nelle shared preferences
    if(inputEmail.getText().toString().trim() != "")
    {

        Log.d("KYBRD", "Valor: " + inputEmail.getText().toString().trim());

        InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); 
        inputManager.hideSoftInputFromWindow(inputPassword.getWindowToken(),0);
    }



    inputPassword.setText(pref.getString("password", ""));

    // Salvo il nome del giocatore preso dall'intent registrazione (se si è passati per tale schermata)
    intentRegistrazione = getIntent();
    String username = intentRegistrazione.getStringExtra("nomeGiocatore");

    if(username != null)
    {
        inputEmail.setText(username);
        inputPassword.setText("");

        editor.clear();
        editor.commit();
    }
    else
        inputEmail.setText(pref.getString("name", ""));

    // Override del bottone, in modo che funzioni da "tasto Invio"
    inputPassword.setOnEditorActionListener(new TextView.OnEditorActionListener() 
    {   
        @Override
        public boolean onEditorAction(TextView v, int actionId, KeyEvent event)
        {
            if (actionId == EditorInfo.IME_ACTION_SEARCH || actionId == EditorInfo.IME_ACTION_DONE || 
                    event.getAction() == KeyEvent.ACTION_DOWN &&
                    event.getKeyCode() == KeyEvent.KEYCODE_ENTER) 
            {
                new CheckUser(Login.this,inputEmail.getText().toString().trim(),inputPassword.getText().toString().trim()).execute();
            }

            if (chkPref.isChecked())
            {
                editor.putString("name", inputEmail.getText().toString().trim());
                editor.putString("password", inputPassword.getText().toString().trim());

                editor.commit();
            }
            else
            {
                editor.clear();
                editor.commit();
            }

            return true;
        }
    });

    inputPassword.setImeActionLabel("Invia", KeyEvent.KEYCODE_ENTER);

    // Override del metodo onClick per controllare la presenza della connessione, 
    btnLogin.setOnClickListener(new View.OnClickListener() 
    {   
        @Override
        public void onClick(View v) 
        {   
            // controllo se esiste una connessione

            ConnectivityManager manager = (ConnectivityManager)getSystemService(Login.CONNECTIVITY_SERVICE);
            Boolean isWifiConnected = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
            Boolean isMobileConnected = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();

            if(!isWifiConnected && !isMobileConnected)
            {
                new AlertDialog.Builder(Login.this)
                .setTitle("Connessione non attiva!")
                .setMessage("Per giocare a ProjectM è necessaria la connessione alla rete. Vuoi andare alla pagina delle impostazioni?")
                .setNegativeButton("Attiva Wifi", new DialogInterface.OnClickListener() 
                {
                    @Override
                    public void onClick(DialogInterface dialog, int which) 
                    {
                        startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));
                        dialog.dismiss();
                    }
                })
                .setPositiveButton(android.R.string.no, new DialogInterface.OnClickListener() 
                {
                    @Override
                    public void onClick(DialogInterface dialog, int which) 
                    {
                        dialog.dismiss();
                        finish();
                    }
                })
                .setNeutralButton("Attiva rete mobile", new DialogInterface.OnClickListener() 
                {
                    @Override
                    public void onClick(DialogInterface dialog, int which) 
                    {
                        startActivity(new Intent(Settings.ACTION_WIRELESS_SETTINGS));
                        dialog.dismiss();
                    }
                }).create().show();
            }
            else
            {
                // Verifico correttezza dati login
                new CheckUser(Login.this,inputEmail.getText().toString().trim(),inputPassword.getText().toString().trim()).execute();

                if (chkPref.isChecked())
                {
                    editor.putString("name", inputEmail.getText().toString().trim());
                    editor.putString("password", inputPassword.getText().toString().trim());

                    editor.commit();
                }
                else
                {
                    editor.clear();
                    editor.commit();
                }
            }
        }
    });

    // Override del metodo onClick che porta alla schermata di registrazione
    btnLinkToRegister.setOnClickListener(new View.OnClickListener() 
    { 
        @Override
        public void onClick(View view) 
        {
            Intent intentToRegistration = new Intent(getApplicationContext(),Register.class);
            startActivity(intentToRegistration);
            finish();
        }
    }); 
}
}

下面是代码，希望对你有帮助！

score 1 · Accepted Answer

你应该用这一行替换你的隐藏键盘代码：

this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

现在会有所帮助。

干杯

score 1 · Accepted Answer

隐藏软键盘尝试使用：

/**
     * Hides Soft Keyboard displayed by currently focused EditText
     * 
     * @param pEditText EditText currenly focused EditText
     */
    protected void hideSoftKeyboard( EditText pEditText )
    {
        InputMethodManager lInputMethodManager = (InputMethodManager) pEditText.getContext().getSystemService( Context.INPUT_METHOD_SERVICE );
        lInputMethodManager.hideSoftInputFromWindow( pEditText.getWindowToken() , 0 );
    }

score 0 · Accepted Answer

0

检查结果trim()是否为空字符串，而不是null

于 2013-06-18T08:51:20.377 回答

score 0 · Accepted Answer

0

使用 android:windowSoftInputMode="stateHidden" 隐藏键盘

于 2013-06-18T08:52:35.647 回答

android - 如果 EditText 不为空，则隐藏软键盘

4 回答 4

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