開啟手機手電筒

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<span style="font-size:14px;">package com.jwzhangjie;import com.jwzhangjie.test.R;import android.app.Activity;import android.hardware.Camera;import android.hardware.Camera.Parameters;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;/** * 手電筒 * @author jwzhangjie * */public class CameraLight extends Activity{    private Button openLight;    private boolean status = false;    private Camera camera;    private Parameters parameters;    private CameraLight instance;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.cameralight);        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("關閉");                    status = true;                    new Thread(new TurnOnLight()).start();                }else {                    status = false;                    openLight.setText("開啟");                    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);        }    } }</span>

 

開啟手機手電筒