软键盘总是显示在ActivityGroup和TabHost使用的Activities中

Question

我的应用程序由TabHost和ActivityGroup组成，其中包含嵌套的Activities。当ActivityGroup的Activity创建或恢复时，软键盘立即显示。我需要它只显示我点击编辑文本。我的ActivityGroup类：

public class LoginTabGroup  extends ActivityGroup {
private ArrayList<String> mIdList;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (mIdList == null) mIdList = new ArrayList<String>();
    }
/**
* This is called when a child activity of this one calls its finish method.
* This implementation calls {@link LocalActivityManager#destroyActivity} on the child activity
* and starts the previous activity.
* If the last child activity just called finish(),this activity (the parent),
* calls finish to finish the entire group.
*/
@Override
public void finishFromChild(Activity child) {
LocalActivityManager manager = getLocalActivityManager();
int index = mIdList.size()-1;
if (index < 1) {
finish();
return;
}
manager.destroyActivity(mIdList.get(index), true);
mIdList.remove(index);
index--;
String lastId = mIdList.get(index);
Intent lastIntent = manager.getActivity(lastId).getIntent();
Window newWindow = manager.startActivity(lastId, lastIntent);
newWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
Log.i("ActivityGroup","finishFromChild method");
setContentView(newWindow.getDecorView());
}
/**
* Starts an Activity as a child Activity to this.
* @param Id Unique identifier of the activity to be started.
* @param intent The Intent describing the activity to be started.
* @throws android.content.ActivityNotFoundException.
*/
public void startChildActivity(String Id, Intent intent) 
{
    Window window = getLocalActivityManager().startActivity(Id,intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));
    window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
    Log.i("ActivityGroup","startActivity method");
    if (window != null) {
    mIdList.add(Id);
    setContentView(window.getDecorView());
    }
}
/**
* The primary purpose is to prevent systems before android.os.Build.VERSION_CODES.ECLAIR
* from calling their default KeyEvent.KEYCODE_BACK during onKeyDown.
*/
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
    //preventing default implementation previous to android.os.Build.VERSION_CODES.ECLAIR
    return true;
    }
    return super.onKeyDown(keyCode, event);
}
/**
* Overrides the default implementation for KeyEvent.KEYCODE_BACK
* so that all systems call onBackPressed().
*/
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
    onBackPressed();
    return true;
    }
    return super.onKeyUp(keyCode, event);
}
/**
* If a Child Activity handles KeyEvent.KEYCODE_BACK.
* Simply override and add this method.
*/
    @Override
    public void onBackPressed () {
    int length = mIdList.size();
    if ( length > 1) {
    Activity current = getLocalActivityManager().getActivity(mIdList.get(length-1));
    current.finish();
    }
}
}

我试着这样做newWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

在创建新窗口时，但没有帮助。类似的方法

 InputMethodManager imm = (InputMethodManager)getSystemService(
              Context.INPUT_METHOD_SERVICE);
    imm.toggleSoftInput(InputMethodManager.HIDE_IMPLICIT_ONLY, 0);

在嵌套的"活动"中工作正常，但在"活动"创建或恢复时，键盘会立即显示并隐藏。由于键盘闪烁的原因，我认为这不是一个好的解决方案。我还试图添加AndroidManifest

 android:windowSoftInputMode="stateAlwaysHidden" 
         android:configChanges="keyboardHidden|orientation"

两者都在嵌套的ActivityGroups中。但结果还是一样。我该如何解决此问题？

Answer 1

之所以会发生这种情况，是因为布局中的编辑文本是可聚焦的元素，如果没有其他元素请求，则会在启动时请求聚焦。解决方案很简单：在所有布局文件中，在容器布局中将focusable和focusableInTouchMode设置为true，因此它将首先请求聚焦，而编辑文本不会聚焦。然后你可以删除隐式隐藏的

android:focusable="true"
android:focusableInTouchMode="true"

Answer 2

我使用了破解来解决这个问题。在ActivityGroup的课堂和儿童活动中，我都放了

        InputMethodManager imm = (InputMethodManager)getSystemService(
                  Context.INPUT_METHOD_SERVICE);
        imm.toggleSoftInput(InputMethodManager.HIDE_IMPLICIT_ONLY, 0); 

在onCreate（）和onResume（）方法之前。如果有人知道告诉我更有效的解决方案，我将不胜感激。

Answer 3

ActivityGroup使用是一个非常糟糕且缓慢的解决方案。我决定将FragmentActivities与选项卡中的嵌套Fragments一起使用。不过，"活动"启动时有时会显示软键盘。我将其中一个没有图像的选项卡中的文本设置为居中。我想，它叫软键盘显示。我的修复（在TabActivity类中）：

 final View view = tabHost.getTabWidget().getChildTabViewAt(1);
       if ( view != null ) {
         //  view.getLayoutParams().height *= 0.66;
           InputMethodManager imm2 = (InputMethodManager)getSystemService(
                  Context.INPUT_METHOD_SERVICE);
           imm2.toggleSoftInput(InputMethodManager.HIDE_IMPLICIT_ONLY, 0);
           //  get title text view
           final View textView = view.findViewById(android.R.id.title);
           if ( textView instanceof TextView ) {
               // just in case check the type
               // center text
               ((TextView) textView).setGravity(Gravity.CENTER);
               // wrap text
               ((TextView) textView).setSingleLine(false);
               // explicitly set layout parameters
               textView.getLayoutParams().height = ViewGroup.LayoutParams.FILL_PARENT;
               textView.getLayoutParams().width = ViewGroup.LayoutParams.WRAP_CONTENT;
           }
       }