Android 手电筒 附源码
16lz
2021-01-23
//图片用Draw-9-Path处理了下。package com.myflashlight;import android.hardware.Camera;import android.os.Bundle;import android.app.Activity;import android.view.KeyEvent;import android.view.Menu;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.Button;import android.widget.Toast;public class MyFlashlight extends Activity {Button on_off; Camera camera; public static final long longTime=2000,shortTime=1000,pauseTime=200; boolean isOn=false;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);noTitle();setContentView(R.layout.my_flashlight);initView();addListener();}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.my_flashlight, menu);return true;}//销毁进程@Overrideprotected void onDestroy() {System.exit(0);// TODO Auto-generated method stubsuper.onDestroy();}//返回键退出@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {// TODO Auto-generated method stub while (keyCode==event.KEYCODE_BACK) { onDestroy();}return super.onKeyDown(keyCode, event);}//去标题 public void noTitle(){requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); } private void initView(){on_off=(Button) findViewById(R.id.on_off);}private void addListener(){on_off.setOnClickListener(new FlashlightOnClick());}private class FlashlightOnClick implements View.OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.on_off:if(!isOn){BtnStyle_Off();openFlashlight();}else if(isOn){BtnStyle_On();closeFlashlight();}break;default:break;}}}//开关开启样式private void BtnStyle_On(){on_off.setText(R.string.turnOn);on_off.setTextColor(getResources().getColor(R.color.darkblue));on_off.setBackgroundResource(R.drawable.open);}//开关关闭样式private void BtnStyle_Off(){on_off.setText(R.string.turnOff);on_off.setTextColor(getResources().getColor(R.color.darkred));on_off.setBackgroundResource(R.drawable.close);}//开启手电筒private void openFlashlight(){camera=Camera.open();Camera.Parameters parameters=camera.getParameters();parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);camera.setParameters(parameters);camera.startPreview();isOn=true;Toast.makeText(MyFlashlight.this,"已开启", 2000).show();}//关闭手电筒private void closeFlashlight(){Camera.Parameters parameters=camera.getParameters();parameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);camera.setParameters(parameters);camera.stopPreview();camera.release();isOn=false;Toast.makeText(MyFlashlight.this,"已关闭", 2000).show();}}
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