Add detail page for Battery usage and track GPS and foreground CPU.

Show details such as Cpu time, Cpu foreground time, data sent/received,
and GPS usage.

src/com/android/settings/fuelgauge/PowerUsageDetail.java

@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2009 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.settings.fuelgauge;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.android.settings.R;
+
+public class PowerUsageDetail extends Activity {
+
+    public static final int USAGE_SINCE_UNPLUGGED = 1;
+    public static final int USAGE_SINCE_RESET = 2;
+
+    public static final String EXTRA_TITLE = "title";
+    public static final String EXTRA_PERCENT = "percent";
+    public static final String EXTRA_USAGE_SINCE = "since";
+    public static final String EXTRA_USAGE_DURATION = "duration";
+    public static final String EXTRA_DETAIL_TYPES = "types";
+    public static final String EXTRA_DETAIL_VALUES = "values";
+
+    private static final int SECONDS_PER_MINUTE = 60;
+    private static final int SECONDS_PER_HOUR = 60 * 60;
+    private static final int SECONDS_PER_DAY = 24 * 60 * 60;
+
+    private static final boolean DEBUG = true;
+    private String mTitle;
+    private double mPercentage;
+    private int mUsageSince;
+    private int[] mTypes;
+    private double[] mValues;
+    private TextView mTitleView;
+    private ViewGroup mDetailsParent;
+    private long mStartTime;
+
+    private static final String TAG = "PowerUsageDetail";
+
+    @Override
+    protected void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        setContentView(R.layout.power_usage_details);
+        createDetails();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mStartTime = android.os.Process.getElapsedCpuTime();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+    }
+
+    private void createDetails() {
+        final Intent intent = getIntent();
+        mTitle = intent.getStringExtra(EXTRA_TITLE);
+        mPercentage = intent.getDoubleExtra(EXTRA_PERCENT, -1);
+        mUsageSince = intent.getIntExtra(EXTRA_USAGE_SINCE, USAGE_SINCE_UNPLUGGED);
+
+        mTypes = intent.getIntArrayExtra(EXTRA_DETAIL_TYPES);
+        mValues = intent.getDoubleArrayExtra(EXTRA_DETAIL_VALUES);
+
+        mTitleView = (TextView) findViewById(R.id.name);
+        mTitleView.setText(mTitle);
+        // TODO: I18N
+        ((TextView)findViewById(R.id.battery_percentage))
+            .setText(String.format("%3.2f%% of battery usage since last unplugged", mPercentage));
+
+        mDetailsParent = (ViewGroup) findViewById(R.id.details);
+        LayoutInflater inflater = getLayoutInflater();
+        if (mTypes != null && mValues != null) {
+            for (int i = 0; i < mTypes.length; i++) {
+                // Only add an item if the time is greater than zero
+                if (mValues[i] <= 0) continue;
+                final String label = getString(mTypes[i]);
+                String value = null;
+                switch (mTypes[i]) {
+                    case R.string.usage_type_data_recv:
+                    case R.string.usage_type_data_send:
+                        value = formatBytes(mValues[i]);
+                        break;
+                    default:
+                        value = formatTime(mValues[i]);
+                }
+                ViewGroup item = (ViewGroup) inflater.inflate(R.layout.power_usage_detail_item_text,
+                        null);
+                mDetailsParent.addView(item);
+                TextView labelView = (TextView) item.findViewById(R.id.label);
+                TextView valueView = (TextView) item.findViewById(R.id.value);
+                labelView.setText(label);
+                valueView.setText(value);
+            }
+        }
+    }
+
+    private String formatTime(double millis) {
+        StringBuilder sb = new StringBuilder();
+        int seconds = (int) Math.floor(millis / 1000);
+
+        int days = 0, hours = 0, minutes = 0;
+        if (seconds > SECONDS_PER_DAY) {
+            days = seconds / SECONDS_PER_DAY;
+            seconds -= days * SECONDS_PER_DAY;
+        }
+        if (seconds > SECONDS_PER_HOUR) {
+            hours = seconds / SECONDS_PER_HOUR;
+            seconds -= hours * SECONDS_PER_HOUR;
+        }
+        if (seconds > SECONDS_PER_MINUTE) {
+            minutes = seconds / SECONDS_PER_MINUTE;
+            seconds -= minutes * SECONDS_PER_MINUTE;
+        }
+        if (days > 0) {
+            sb.append(getString(R.string.battery_history_days, days, hours, minutes, seconds));
+        } else if (hours > 0) {
+            sb.append(getString(R.string.battery_history_hours, hours, minutes, seconds));
+        } else if (minutes > 0) {
+            sb.append(getString(R.string.battery_history_minutes, minutes, seconds));
+        } else {
+            sb.append(getString(R.string.battery_history_seconds, seconds));
+        }
+        return sb.toString();
+    }
+
+    private String formatBytes(double bytes) {
+        // TODO: I18N
+        if (bytes > 1000 * 1000) {
+            return String.format("%.2f MB", ((int) (bytes / 1000)) / 1000f);
+        } else if (bytes > 1024) {
+            return String.format("%.2f KB", ((int) (bytes / 10)) / 100f);
+        } else {
+            return String.format("%d bytes", (int) bytes);
+        }
+    }
+}