Android show softkeyboard with showSoftInput is not working?

问题

I have created a trivial application to test the following functionality. When my activity launches, it needs to be launched with the softkeyboard open.

My code does not work?!

I have tried various "state" settings in the manifest and different flags in the code to the InputMethodManager (imm).

I have included the setting in the AndroidManifest.xml and explicitly invoked in the onCreate of the only activity.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.mycompany.android.studyIme"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="7" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".StudyImeActivity"
                  android:label="@string/app_name" 
                  android:windowSoftInputMode="stateAlwaysVisible">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
</manifest>

... the main layout (main.xml) ...

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView  
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:text="@string/hello"
        />
    <EditText
        android:id="@+id/edit_sample_text"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:hint="@string/hello"
        android:inputType="textShortMessage"
    />
</LinearLayout>

... and the code ...

public class StudyImeActivity extends Activity {
    private EditText mEditTextStudy;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mEditTextStudy = (EditText) findViewById(R.id.edit_study);
        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(mEditTextStudy, InputMethodManager.SHOW_FORCED);
    }
}

回答1:

When the activity launches It seems that the keyboard is initially displayed but hidden by something else, because the following works (but is actually a dirty work-around):

First Method

InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
editText.postDelayed(new Runnable()
{
    @Override
    public void run()
    {
        editText.requestFocus();
        imm.showSoftInput(editText, 0);
    }
}, 100);

Second method

in onCreate to launch it on activity create

new Handler().postDelayed(new Runnable() {
    @Override
    public void run() 
    {
    //  InputMethodManager inputMethodManager=(InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
    //    inputMethodManager.toggleSoftInputFromWindow(EnterYourViewHere.getApplicationWindowToken(), InputMethodManager.SHOW_FORCED, 0);

        if (inputMethodManager != null)
        {
            inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED,0);
        } 
    }
}, 200);

Third Method ADD given code to activity tag in Manifest. It will show keyboard on launch, and set the first focus to your desire view.

android:windowSoftInputMode="stateVisible"

回答2:

Hey I hope you are still looking for the answer as I found it when testing out my code. here is the code:

InputMethodManager imm = (InputMethodManager)_context.getSystemService(Context.INPUT_METHOD_SERVICE);

imm.toggleSoftInput(0, 0);

Here is my question that was answered: android - show soft keyboard on demand

回答3:

This worked with me on a phone with hard keyboard:

editText1.requestFocus();
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
          imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,0);

回答4:

This is so subtle, that it is criminal. This works on the phones that do NOT have a hard, slide-out keyboard. The phones with a hard keyboard will not open automatically with this call. My LG and old Nexus One do not have a keyboard -- therefore, the soft-keyboard opens when the activity launches (that is what I want), but the MyTouch and HTC G2 phones that have slide-out keyboards do not open the soft keyboard until I touch the edit field with the hard keyboard closed.

回答5:

This answer maybe late but it works perfectly for me. Maybe it helps someone :)

public void showSoftKeyboard(View view) {
    if (view.requestFocus()) {
        InputMethodManager imm = (InputMethodManager)
                getSystemService(Context.INPUT_METHOD_SERVICE);
        boolean isShowing = imm.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
        if (!isShowing)
            getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
    }
}

Depends on you need, you can use other flags

InputMethodManager.SHOW_FORCED
WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);

回答6:

Following worked for me:

    mEditTextStudy.requestFocus();
    mEditTextStudy.post(
            new Runnable() {
                @Override
                public void run() {
                    InputMethodManager imm =
                            (InputMethodManager)
                                    getActivity()
                                            .getSystemService(Context.INPUT_METHOD_SERVICE);
                    if (imm != null) {
                        imm.showSoftInput(mEditTextStudy, SHOW_FORCED);
                    }
                }
            });

回答7:

Showing Soft Keyboard is a big problem. I searched a lot to come to a final conclusion. Thanks to this answer which gave a number of clues: https://stackoverflow.com/a/16882749/5903344

Problem:

Normally we call showSoftInput as soon as we initialize the views. In Activities, this is mostly in onCreate, in Fragments onCreateView. In order to show the keyboard, IMM needs to have the focsedView as active. This can be checked using isActive(view) method of IMM. If we call showSoftInput while the views are being created, there is a good chance that the view won't be active for IMM. That is the reason why sometimes a 50-100 ms delayed showSoftInput is useful. However, that still does not guarantee that after 100 ms the view will become active. So in my understanding, this is again a hack.

Solution:

I use the following class. This keeps running every 100 ms until the keyboard has been successfully shown. It performs various checks in each iteration. Some checks can stop the runnable, some post it after 100 ms.

public class KeyboardRunnable extends Runnable
{
    // ----------------------- Constants ----------------------- //
    private static final String TAG = "KEYBOARD_RUNNABLE";

    // Runnable Interval
    private static final int INTERVAL_MS = 100;

    // ----------------------- Classes ---------------------------//
    // ----------------------- Interfaces ----------------------- //
    // ----------------------- Globals ----------------------- //
    private Activity parentActivity = null;
    private View targetView = null;

    // ----------------------- Constructor ----------------------- //
    public KeyboardRunnable(Activity parentActivity, View targetView)
    {
        this.parentActivity = parentActivity;
        this.targetView = targetView;
    }

    // ----------------------- Overrides ----------------------- //
    @Override
    public void run()
    {
        // Validate Params
        if ((parentActivity == null) || (targetView == null))
        {
            Dbg.error(TAG, "Invalid Params");
            return;
        }

        // Get Input Method Manager
        InputMethodManager imm = (InputMethodManager) parentActivity.getSystemService(Context.INPUT_METHOD_SERVICE);

        // Check view is focusable
        if (!(targetView.isFocusable() && targetView.isFocusableInTouchMode()))
        {
            Dbg.error(TAG, "Non focusable view");
            return;
        }
        // Try focusing
        else if (!targetView.requestFocus())
        {
            Dbg.error(TAG, "Cannot focus on view");
            Post();
        }
        // Check if Imm is active with this view
        else if (!imm.isActive(targetView))
        {
            Dbg.error(TAG, "IMM is not active");
            Post();
        }
        // Show Keyboard
       else if (!imm.showSoftInput(targetView, InputMethodManager.SHOW_IMPLICIT))
        {
            Dbg.error(TAG, "Unable to show keyboard");
            Post();
        }
    }

    // ----------------------- Public APIs ----------------------- //
    public static void Hide(Activity parentActivity)
    {
        if (parentActivity != null)
        {
            InputMethodManager imm = (InputMethodManager) parentActivity.getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(parentActivity.findViewById(android.R.id.content).getWindowToken(), 0);
        }
        else
        {
            Dbg.error(TAG, "Invalid params to hide keyboard");
        }
    }

    // ----------------------- Private APIs ----------------------- //
    protected void Post()
    {
        // Post this aftr 100 ms
        handler.postDelayed(this, INTERVAL_MS);
    }
}

To use this, Just create an instance of this class. Pass it the parent activity and the targetView which would have keyboard input and focus afterwards. Then post the instance using a Handler.

回答8:

My code had the toggle in it but not postDelayed. I had tried postDelayed for the showSoftInput without success and I have since tried your suggested solution. I was about to discard it as yet another failed potential solution until I decided to increase the delay time. It works for me all the way down to 200 ms at which point it doesn't work, at least not on the physical phones. So before you poor android developers ditch this answer, try upping the delay for a successful solution. It may pay to add a bit for older slower phones. Thanks heaps, was working on this one for hours.

回答9:

Solution for Xamarin developers (_digit1 == EditText):

        var focussed = _digit1.RequestFocus();
        if (focussed)
        {
            Window.SetSoftInputMode(SoftInput.StateAlwaysVisible);
            var imm = (InputMethodManager)GetSystemService(InputMethodService);
            imm.ToggleSoftInput(ShowFlags.Forced, 0);
        }

回答10:

This works for me:

public void requestFocusAndShowSoftInput(View view){
    view.requestFocus();
    InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
    inputMethodManager.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
}

回答11:

If you're trying to show the soft keyboard in a Fragment, you need to wait until the Activity has been created before calling showSoftInput(). Sample code:

public class SampleFragment extends Fragment {

    private InputMethodManager mImm;
    private TextView mTextView;

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        mImm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        showSoftKeyboard(mTextView);
    }

    /**
     * Request the InputMethodManager show the soft keyboard.  Call this in {@link #onActivityCreated(Bundle)}.
     * @param view the View which would like to receive text input from the soft keyboard
     */
    public void showSoftKeyboard(View view) {
        if (view.requestFocus()) {
            mImm.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
        }
    }

}

回答12:

Here is the modified version of Siddharth Garg's answer. It work's 100% of the time.

import android.content.Context;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;

public class SoftInputService implements Runnable {

    private static final String TAG = SoftInputService.class.getSimpleName();

    private static final int INTERVAL_MS = 100;

    private Context context;
    private View targetView;
    private Handler handler;

    public SoftInputService(Context context, View targetView) {
        this.context = context;
        this.targetView = targetView;
        handler = new Handler(Looper.getMainLooper());
    }

    @Override
    public void run() {
        if (context == null || targetView == null) {
            return;
        }

        InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);

        if (!targetView.isFocusable() || !targetView.isFocusableInTouchMode()) {
            Log.d(TAG,"focusable = " + targetView.isFocusable() + ", focusableInTouchMode = " + targetView.isFocusableInTouchMode());
            return;

        } else if (!targetView.requestFocus()) {
            Log.d(TAG,"Cannot focus on view");
            post();

        } else if (!imm.showSoftInput(targetView, InputMethodManager.SHOW_IMPLICIT)) {
            Log.d(TAG,"Unable to show keyboard");
            post();
        }
    }

    public void show() {
        handler.post(this);
    }

    public static void hide(Context context, IBinder windowToekn) {
        InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(windowToekn, 0);
    }

    protected void post() {
        handler.postDelayed(this, INTERVAL_MS);
    }
}

Usage:

// To show the soft input
new SoftInputService(context, theEditText).show();
// To hide the soft input
SoftInputService.hide(context, theEditText.getWindowToken());

来源：https://stackoverflow.com/questions/5520085/android-show-softkeyboard-with-showsoftinput-is-not-working