package com.net;
import com.hero.net.Tool;
import android.app.Activity;import android.content.Context;import android.hardware.Camera;import android.hardware.Camera.Parameters;public class FlashLight extends Activity {
private Context context; private Camera camera = null; private Parameters parameters = null;private boolean flag = false;
// 构造器
public FlashLight(Context context) { this.context = context; camera = Camera.open(); }public boolean setFlashLight() {
parameters = camera.getParameters(); if (parameters.getFlashMode().equals("off")) { Tool.ShowStatus(context, true, true, "FlashLight"); parameters.setFlashMode(Parameters.FLASH_MODE_TORCH); camera.setParameters(parameters); Tool.ShowStatus(context, false, true, "FlashLight"); flag = true; } else { Tool.ShowStatus(context, true, false, "FlashLight"); parameters.setFlashMode(Parameters.FLASH_MODE_OFF); camera.setParameters(parameters); Tool.ShowStatus(context, false, false, "FlashLight"); flag = false; } return flag; }@Override
protected void onDestroy() { camera.release(); super.onDestroy(); }@Override
protected void onPause() { if (flag) { parameters = camera.getParameters(); parameters.setFlashMode(Parameters.FLASH_MODE_OFF); camera.setParameters(parameters); } super.onPause(); }@Override
protected void onPostResume() { if (flag) { parameters = camera.getParameters(); parameters.setFlashMode(Parameters.FLASH_MODE_TORCH); camera.setParameters(parameters); } super.onPostResume(); }}