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1.通过读取电流节点的方式,获取电流。
电流节点:”/sys/class/power_supply/battery/BatteryAverageCurrent” 2.代码: .............................................................. import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.BufferedReader; .............................................................. public class Xxxxx extends Activity{ ..................... private static final String CHARGER_CURRENT_NOW = "/sys/class/power_supply/battery/BatteryAverageCurrent"; .............................................................. private TextView mCurrent; .............................................................. public void onResume(){ .............................................................. mCurrent = (TextView)findViewById(R.id.current); .............................................................. try { mCurrent.setText(readCurrentFile(new File(CHARGER_CURRENT_NOW))+" mA"); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } .............................................................. } public String readCurrentFile(File file) throws IOException { InputStream input = new FileInputStream(file); try { BufferedReader reader = new BufferedReader(new InputStreamReader( input)); StringBuilder *** = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { ***.append(line); } return ***.toString(); } finally { input.close(); } } } |
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