Android-开启闪光灯作为手电筒

来源：互联网发布：知乎富士国际语学院编辑：程序博客网时间：2024/04/29 17:42

1、首先，肯定不能忘记添加权限

<uses-permission android:name="android.permission.CAMERA" />

2、直接粘贴源码

public class MainActivity extends Activity {    private Button openLight;      private boolean status = false;      private Camera camera;      private Parameters parameters;      private MainActivity instance;     @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);instance = this;          camera = Camera.open();          openLight = (Button)findViewById(R.id.openLight);          openLight.setOnClickListener(new OnClickListener() {              @Override              public void onClick(View v) {                  if (!status) {                      openLight.setText("关闭");                      status = true;                      new Thread(new TurnOnLight()).start();                  }else {                      status = false;                      openLight.setText("打开");                      instance.parameters.setFlashMode("off");                      instance.camera.setParameters(instance.parameters);                  }              }          });                }                  private class TurnOnLight implements Runnable{          @Override          public void run() {              instance.parameters = instance.camera.getParameters();              instance.parameters.setFlashMode("torch");              instance.camera.setParameters(instance.parameters);          }      }  }

3、项目下载地址

CameraLight.zip

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