Android 電池狀態偵聽顯示 電量 充電動態顯示

想使用Android系統的電池偵聽和系統的電池圖片；

引入源代碼中的兩個xml文件（這裡我在android2.2的jar包中找不到，所以才引入，源代碼路徑：C:\android-sdk-windows\platforms\android-8\data\res\drawable），之後會發現stat_sys_battery.xml報錯，所以我就將下圖

1.這些圖引入到我的drawable目錄下，然後將stat_sys_battery.xml中的圖片引入路徑更改，如下：

1. <level-list xmlns:android="http://schemas.android.com/apk/res/android">
2. <item android:maxLevel="4" android:drawable="@drawable/stat_sys_battery_0" />
3. <item android:maxLevel="14" android:drawable="@drawable/stat_sys_battery_10" />
4. <item android:maxLevel="29" android:drawable="@drawable/stat_sys_battery_20" />
5. <item android:maxLevel="49" android:drawable="@drawable/stat_sys_battery_40" />
6. <item android:maxLevel="69" android:drawable="@drawable/stat_sys_battery_60" />
7. <item android:maxLevel="89" android:drawable="@drawable/stat_sys_battery_80" />
8. <item android:maxLevel="100" android:drawable="@drawable/stat_sys_battery_100" />
9. </level-list>

2.接下來是在activity中的操作：

創建一個IntentFilter

1. <span style="white-space:pre"> </span>private IntentFilter mIntentFilter;

在oncreate的方法中：加入：

1. <span style="white-space:pre"> </span>//電池相關
2. <span style="white-space:pre"> </span>mIntentFilter = new IntentFilter();
3. <span style="white-space:pre"> </span>mIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);

3.接收廣播

1. <span style="white-space:pre"> </span>//聲明消息處理過程
2. private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
3. @Override
4. public void onReceive(Context context, Intent intent) {
5. String action = intent.getAction();
6. int status = intent.getIntExtra("status", 0);
7. int health = intent.getIntExtra("health", 0);
8. boolean present = intent.getBooleanExtra("present", false);
9. int level = intent.getIntExtra("level", 0);
10. int scale = intent.getIntExtra("scale", 0);
11. int icon_small = intent.getIntExtra("icon-small", 0);
12. int plugged = intent.getIntExtra("plugged", 0);
13. int voltage = intent.getIntExtra("voltage", 0);
14. int temperature = intent.getIntExtra("temperature", 0);
15. String technology = intent.getStringExtra("technology");
16. String statusString = "";
17. switch (status) {
18. case BatteryManager.BATTERY_STATUS_UNKNOWN:
19. statusString = "unknown";
20. break;
21. case BatteryManager.BATTERY_STATUS_CHARGING:
22. statusString = "charging";
23. battery_image.setImageResource(R.drawable.stat_sys_battery_charge);
24. battery_image.getDrawable().setLevel(level);
25. break;
26. case BatteryManager.BATTERY_STATUS_DISCHARGING:
27. statusString = "discharging";
28. battery_image.setImageResource(R.drawable.stat_sys_battery);
29. battery_image.getDrawable().setLevel(level);
30. break;
31. case BatteryManager.BATTERY_STATUS_NOT_CHARGING:
32. statusString = "not charging";
33. break;
34. case BatteryManager.BATTERY_STATUS_FULL:
35. statusString = "full";
36. break;
37. }
38. String healthString = "";
39. switch (health) {
40. case BatteryManager.BATTERY_HEALTH_UNKNOWN:
41. healthString = "unknown";
42. break;
43. case BatteryManager.BATTERY_HEALTH_GOOD:
44. healthString = "good";
45. break;
46. case BatteryManager.BATTERY_HEALTH_OVERHEAT:
47. healthString = "overheat";
48. break;
49. case BatteryManager.BATTERY_HEALTH_DEAD:
50. healthString = "dead";
51. break;
52. case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:
53. healthString = "voltage";
54. break;
55. case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:
56. healthString = "unspecified failure";
57. break;
58. }
59. String acString = "";
60. switch (plugged) {
61. case BatteryManager.BATTERY_PLUGGED_AC:
62. acString = "plugged ac";
63. break;
64. case BatteryManager.BATTERY_PLUGGED_USB:
65. acString = "plugged usb";
66. break;
67. }
68. Log.i("cat", statusString);
69. Log.i("cat", healthString);
70. Log.i("cat", String.valueOf(present));
71. Log.i("cat", String.valueOf(level));
72. Log.i("cat", String.valueOf(scale));
73. Log.i("cat", String.valueOf(icon_small));
74. Log.i("cat", acString);
75. Log.i("cat", String.valueOf(voltage));
76. Log.i("cat", String.valueOf(temperature));
77. Log.i("cat", technology);
78. //要看看是不是我們要處理的消息
79. if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
80. //電池電量，數字
81. Log.d("Battery", "" + intent.getIntExtra("level", 0));
82. //電池最大容量
83. Log.d("Battery", "" + intent.getIntExtra("scale", 0));
84. //電池伏數
85. Log.d("Battery", "" + intent.getIntExtra("voltage", 0));
86. //電池溫度
87. Log.d("Battery", "" + intent.getIntExtra("temperature", 0));
88. //電池狀態，返回是一個數字
89. // BatteryManager.BATTERY_STATUS_CHARGING 表示是充電狀態
90. // BatteryManager.BATTERY_STATUS_DISCHARGING 放電中
91. // BatteryManager.BATTERY_STATUS_NOT_CHARGING 未充電
92. // BatteryManager.BATTERY_STATUS_FULL 電池滿
93. Log.d("Battery", "ss" + intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_CHARGING));
94. //充電類型 BatteryManager.BATTERY_PLUGGED_AC 表示是充電器，不是這個值，表示是 USB
95. Log.d("Battery", "" + intent.getIntExtra("plugged", 0));
96. //電池健康情況，返回也是一個數字
97. //BatteryManager.BATTERY_HEALTH_GOOD 良好
98. //BatteryManager.BATTERY_HEALTH_OVERHEAT 過熱
99. //BatteryManager.BATTERY_HEALTH_DEAD 沒電
100. //BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE 過電壓
101. //BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE 未知錯誤
102. Log.d("Battery", "" + intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN));
103. }
104. }
105. };

這裡真正處理圖片變換的是以下幾句話：其他的我是在做備注

1. <span style="font-weight: bold; white-space: pre; "> </span>switch (status) {
2. case BatteryManager.BATTERY_STATUS_UNKNOWN:
3. statusString = "unknown";
4. break;
5. case BatteryManager.BATTERY_STATUS_CHARGING:
6. statusString = "charging";
7. battery_image.setImageResource(R.drawable.stat_sys_battery_charge);
8. battery_image.getDrawable().setLevel(level);
9. break;
10. case BatteryManager.BATTERY_STATUS_DISCHARGING:
11. statusString = "discharging";
12. battery_image.setImageResource(R.drawable.stat_sys_battery);
13. battery_image.getDrawable().setLevel(level);
14. break;
15. case BatteryManager.BATTERY_STATUS_NOT_CHARGING:
16. statusString = "not charging";
17. break;
18. case BatteryManager.BATTERY_STATUS_FULL:
19. statusString = "full";
20. break;
21. }

4.在onResume方法中注冊消息處理器

1. <span style="white-space:pre"> </span>registerReceiver(mIntentReceiver, mIntentFilter);

5.在onPause方法中注銷

1. <span style="white-space:pre"> </span>unregisterReceiver(mIntentReceiver);