[英]how get Current CPU Temperature programmatically in all Android Versions?
我正在使用此代碼獲取當前CPU溫度:
只見它太
private float getCurrentCPUTemperature() {
String file = readFile("/sys/devices/virtual/thermal/thermal_zone0/temp", '\n');
if (file != null) {
return Long.parseLong(file);
} else {
return Long.parseLong(batteryTemp + " " + (char) 0x00B0 + "C");
}
}
private byte[] mBuffer = new byte[4096];
@SuppressLint("NewApi")
private String readFile(String file, char endChar) {
// Permit disk reads here, as /proc/meminfo isn't really "on
// disk" and should be fast. TODO: make BlockGuard ignore
// /proc/ and /sys/ files perhaps?
StrictMode.ThreadPolicy savedPolicy = StrictMode.allowThreadDiskReads();
FileInputStream is = null;
try {
is = new FileInputStream(file);
int len = is.read(mBuffer);
is.close();
if (len > 0) {
int i;
for (i = 0; i < len; i++) {
if (mBuffer[i] == endChar) {
break;
}
}
return new String(mBuffer, 0, i);
}
} catch (java.io.FileNotFoundException e) {
} catch (java.io.IOException e) {
} finally {
if (is != null) {
try {
is.close();
} catch (java.io.IOException e) {
}
}
StrictMode.setThreadPolicy(savedPolicy);
}
return null;
}
並像它一樣使用它:
float cpu_temp = getCurrentCPUTemperature();
txtCpuTemp.setText(cpu_temp + " " + (char) 0x00B0 + "C");
它的工作就像一個魅力,但對於Android M及其下。 對於Android N及以上(7,8,9)不工作並顯示溫度如下:
Android 6及以下(57,5)中的57.0
Android 7及以上版本57000.0(7,8,9)
我也嘗試這個代碼:
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
txtCpuTemp.setText((cpu_temp / 1000) + " " + (char) 0x00B0 + "C");
}
但不工作:(
我怎樣才能在所有Android版本中獲得Temp?
更新:
我更改代碼並在某些設備上工作除了三星:
float cpu_temp = getCurrentCPUTemperature();
txtCpuTemp.setText(cpu_temp + " " + (char) 0x00B0 + "C");
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
txtCpuTemp.setText(cpu_temp / 1000 + " " + (char) 0x00B0 + "C");
}
在較新的API上將值除以1000
:
float cpu_temp = getCurrentCPUTemperature();
if(Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
cpu_temp = cpu_temp / 1000;
}
我只是想知道batteryTemp
來自哪里以及它應該如何與CPU
相關。
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