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Issue #94: feature request: Event for Keyboard show/hide

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macdonst 2011-05-30 15:12:31 -04:00
parent 4280fdf252
commit 9036eb8fcc
1 changed files with 66 additions and 1 deletions
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67
framework/src/com/phonegap/DroidGap.java
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@ -9,6 +9,8 @@ package com.phonegap;
import org.json.JSONArray;
import org.json.JSONException;
import android.app.Activity;
import android.app.AlertDialog;
import android.widget.EditText;
import android.content.Context;
@ -17,6 +19,7 @@ import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.Rect;
import android.media.AudioManager;
import android.net.Uri;
import android.os.Bundle;
@ -168,7 +171,7 @@ public class DroidGap extends PhonegapActivity {
WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
// This builds the view. We could probably get away with NOT having a LinearLayout, but I like having a bucket!
root = new LinearLayout(this);
root = new LinearLayoutSoftKeyboardDetect(this);
root.setOrientation(LinearLayout.VERTICAL);
root.setBackgroundColor(Color.BLACK);
root.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
@ -1276,4 +1279,66 @@ public class DroidGap extends PhonegapActivity {
}
});
}
/**
* We are providing this class to detect when the soft keyboard is shown
* and hidden in the web view.
*/
class LinearLayoutSoftKeyboardDetect extends LinearLayout {
private static final String LOG_TAG = "SoftKeyboardDetect";
private int oldHeight = 0; // Need to save the old height as not to send redundant events
public LinearLayoutSoftKeyboardDetect(Context context) {
super(context);
}
@Override
/**
* Start listening to new measurement events. Fire events when the height
* gets smaller fire a show keyboard event and when height gets bigger fire
* a hide keyboard event.
*
* Note: We are using callbackServer.sendJavascript() instead of
* this.appView.loadUrl() as changing the URL of the app would cause the
* soft keyboard to go away.
*
* @param widthMeasureSpec
* @param heightMeasureSpec
*/
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
Log.d(LOG_TAG, "We are in our onMeasure method");
// Get the current height of the visible part of the screen.
// This height will not included the status bar.
int height = MeasureSpec.getSize(heightMeasureSpec);
Log.d(LOG_TAG, "Old Height = " + oldHeight);
Log.d(LOG_TAG, "Height = " + height);
// If the oldHeight = 0 then this is the first measure event as the app starts up.
// If oldHeight == height then we got a measurement change that doesn't affect us.
if (oldHeight == 0 || oldHeight == height) {
Log.d(LOG_TAG, "Ignore this event");
}
// If the height as gotten bigger then we will assume the soft keyboard has
// gone away.
else if (height > oldHeight) {
Log.d(LOG_TAG, "Throw hide keyboard event");
callbackServer.sendJavascript("PhoneGap.fireEvent('hidekeyboard');");
}
// If the height as gotten smaller then we will assume the soft keyboard has
// been displayed.
else if (height < oldHeight) {
Log.d(LOG_TAG, "Throw show keyboard event");
callbackServer.sendJavascript("PhoneGap.fireEvent('showkeyboard');");
}
// Update the old height for the next event
oldHeight = height;
}
}
}