Android Open Source - AsciiCamera Ascii Cam Preferences

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From Project

Back to project page AsciiCamera.

License

The source code is released under:

Apache License

Java Source Code

// Copyright (C) 2014 Bruno Ramalhete
//from   w  w  w  . j  ava2  s.  com
package com.spectralsoftware.asciicamera;

import com.spectralsoftware.asciicamera.R;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;

public class AsciiCamPreferences extends PreferenceActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.preferences);
        
        Preference autoConvertPref = getPreferenceManager().findPreference(getString(R.string.autoConvertPicturesPrefId));
        autoConvertPref.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
            public boolean onPreferenceChange(Preference pref, Object value) {
                // Update broadcast receivers immediately so the change takes effect even if the user
                // doesn't go back to the main activity.
                setAutoConvertEnabled(AsciiCamPreferences.this, Boolean.TRUE.equals(value));
                return true;
            }
        });
    }

    // sets FLAG_ACTIVITY_NO_HISTORY so exiting and relaunching won't go back to this screen
    public static Intent startIntent(Activity parent, int requestCode) {
        Intent aboutIntent = new Intent(parent, AsciiCamPreferences.class);
        aboutIntent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
        parent.startActivityForResult(aboutIntent, requestCode);
        return aboutIntent;
    }
    
    /**
     * Sets whether pictures saved by the camera app (or other apps which broadcast the appropriate intent)
     * should automatically be converted to ascii via the NewPictureReceiver broadcast receiver.
     */
    public static void setAutoConvertEnabled(Context context, boolean enabled) {
        boolean receiverEnabled = false;
        boolean legacyReceiverEnabled = false;
        if (enabled) {
            try {
                // Android 4.0 and later have a Camera.ACTION_NEW_PICTURE constant, which camera apps send after
                // taking a picture. The NewPictureReceiver class listens for this broadcast. Earlier Android
                // versions send the undocumented com.android.camera.NEW_PICTURE. This determines which
                // receiver to enable based on whether the ACTION_NEW_PICTURE field exists.
                android.hardware.Camera.class.getField("ACTION_NEW_PICTURE");
                receiverEnabled = true;
            }
            catch(Exception ex) {
                legacyReceiverEnabled = true;
            }
        }
        PackageManager pm = context.getPackageManager();
        pm.setComponentEnabledSetting(new ComponentName(context, NewPictureReceiver.class), 
                receiverEnabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED 
                        : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                PackageManager.DONT_KILL_APP);
        pm.setComponentEnabledSetting(new ComponentName(context, NewPictureReceiverLegacyBroadcast.class), 
                legacyReceiverEnabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED 
                        : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                PackageManager.DONT_KILL_APP);        
    }
}

Java Source Code List

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