Android example source code file (StatusBarIcon.java)

This example Android source code file (StatusBarIcon.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, animatedimageview, content, drawing, graphics, icon_height, icon_width, icondata, layoutinflater, no, paint, resources, runtimeexception, statusbarexception, statusbaricon, textview, ui, view, viewgroup, widget

The StatusBarIcon.java Android example source code

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.server.status;

import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.text.TextUtils;
import android.util.Slog;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

class StatusBarIcon {
    // TODO: get this from a resource
    private static final int ICON_GAP = 8;
    private static final int ICON_WIDTH = 25;
    private static final int ICON_HEIGHT = 25;

    public View view;

    IconData mData;
    
    private TextView mTextView;
    private AnimatedImageView mImageView;
    private TextView mNumberView;

    public StatusBarIcon(Context context, IconData data, ViewGroup parent) {
        mData = data.clone();

        switch (data.type) {
            case IconData.TEXT: {
                TextView t;
                t = new TextView(context);
                mTextView = t;
                LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
                        LinearLayout.LayoutParams.WRAP_CONTENT,
                        LinearLayout.LayoutParams.MATCH_PARENT);
                t.setTextSize(16);
                t.setTextColor(0xff000000);
                t.setTypeface(Typeface.DEFAULT_BOLD);
                t.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
                t.setPadding(6, 0, 0, 0);
                t.setLayoutParams(layoutParams);
                t.setText(data.text);
                this.view = t;
                break;
            }

            case IconData.ICON: {
                // container
                LayoutInflater inflater = (LayoutInflater)context.getSystemService(
                                                Context.LAYOUT_INFLATER_SERVICE);
                View v = inflater.inflate(com.android.internal.R.layout.status_bar_icon, parent, false);
                this.view = v;

                // icon
                AnimatedImageView im = (AnimatedImageView)v.findViewById(com.android.internal.R.id.image);
                im.setImageDrawable(getIcon(context, data));
                im.setImageLevel(data.iconLevel);
                mImageView = im;

                // number
                TextView nv = (TextView)v.findViewById(com.android.internal.R.id.number);
                mNumberView = nv;
                if (data.number > 0) {
                    nv.setText("" + data.number);
                    nv.setVisibility(View.VISIBLE);
                } else {
                    nv.setVisibility(View.GONE);
                }
                break;
            }
        }
    }

    public void update(Context context, IconData data) throws StatusBarException {
        if (mData.type != data.type) {
            throw new StatusBarException("status bar entry type can't change");
        }
        switch (data.type) {
        case IconData.TEXT:
            if (!TextUtils.equals(mData.text, data.text)) {
                TextView tv = mTextView;
                tv.setText(data.text);
            }
            break;
        case IconData.ICON:
            if (((mData.iconPackage != null && data.iconPackage != null)
                        && !mData.iconPackage.equals(data.iconPackage))
                    || mData.iconId != data.iconId
                    || mData.iconLevel != data.iconLevel) {
                ImageView im = mImageView;
                im.setImageDrawable(getIcon(context, data));
                im.setImageLevel(data.iconLevel);
            }
            if (mData.number != data.number) {
                TextView nv = mNumberView;
                if (data.number > 0) {
                    nv.setText("" + data.number);
                } else {
                    nv.setText("");
                }
            }
            break;
        }
        mData.copyFrom(data);
    }

    public void update(int number) {
        if (mData.number != number) {
            TextView nv = mNumberView;
            if (number > 0) {
                nv.setText("" + number);
            } else {
                nv.setText("");
            }
        }
        mData.number = number;
    }


    /**
     * Returns the right icon to use for this item, respecting the iconId and
     * iconPackage (if set)
     * 
     * @param context Context to use to get resources if iconPackage is not set
     * @return Drawable for this item, or null if the package or item could not
     *         be found
     */
    static Drawable getIcon(Context context, IconData data) {

        Resources r = null;

        if (data.iconPackage != null) {
            try {
                r = context.getPackageManager().getResourcesForApplication(data.iconPackage);
            } catch (PackageManager.NameNotFoundException ex) {
                Slog.e(StatusBarService.TAG, "Icon package not found: " + data.iconPackage, ex);
                return null;
            }
        } else {
            r = context.getResources();
        }

        if (data.iconId == 0) {
            Slog.w(StatusBarService.TAG, "No icon ID for slot " + data.slot);
            return null;
        }
        
        try {
            return r.getDrawable(data.iconId);
        } catch (RuntimeException e) {
            Slog.w(StatusBarService.TAG, "Icon not found in "
                  + (data.iconPackage != null ? data.iconId : "<system>")
                  + ": " + Integer.toHexString(data.iconId));
        }

        return null;
    }

    int getNumber() {
        return mData.number;
    }
}