Android实现闪光灯效果

本文实例为大家分享了Android实现闪光灯效果的具体代码，供大家参考，具体内容如下

一、声明闪光灯的权限

注意：Camera权限6.0以上需要动态申请权限

二、具体的代码如下

package com.google.yang.myapplication;
 
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
 

public class MainActivity extends AppCompatActivity {
 
  private Button open;
  private Button close;
  private Button openFlicker;
  private Button closeFlicker;
  private Camera camera;
  private Boolean isShanshuo;
 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
 
    open = (Button) this.findViewById(R.id.open);
    close = (Button) this.findViewById(R.id.close);
    openFlicker = (Button) findViewById(R.id.openFlicker);
    closeFlicker = (Button) findViewById(R.id.closeFlicker);
 
    open.setonClickListener(openOnClickListener);
    close.setonClickListener(closeOnClickListener);
    openFlicker.setonClickListener(openFlickerOnClickListener);
    closeFlicker.setonClickListener(closeFlickerOnClickListener);
  }
 
  
  private onClickListener openonClickListener = new onClickListener() {
    @Override
    public void onClick(View v) {
      open();
    }
  };
 
  
  private onClickListener closeonClickListener = new onClickListener() {
    @Override
    public void onClick(View v) {
      close();
    }
  };
 
  
  private onClickListener openFlickeronClickListener = new onClickListener() {
    @Override
    public void onClick(View v) {
      isShanshuo = true;
      openFlicker.setEnabled(false);
      new Thread(new Runnable() {
 @Override
 public void run() {
   while (isShanshuo) {
     open();
     try {
Thread.sleep(300);
     } catch (InterruptedException e) {
e.printStackTrace();
     }
     close();
     try {
Thread.sleep(300);
     } catch (InterruptedException e) {
e.printStackTrace();
     }
   }
 }
      }).start();
    }
  };
 
  
  private onClickListener closeFlickeronClickListener = new onClickListener() {
    @Override
    public void onClick(View v) {
      isShanshuo = false;
      openFlicker.setEnabled(true);
    }
  };
  
  private void open() {
    try {
      camera = Camera.open();
      camera.startPreview();
      Parameters parameters = camera.getParameters();
      parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);
      camera.setParameters(parameters);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
  
  private void close() {
    try {
      Parameters parameters = camera.getParameters();
      parameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
      camera.setParameters(parameters);
      camera.release();
      camera = null;
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
 
}

XML界面很简单，四个按钮：

有兴趣的可以试一试，当作一个小工具收藏一下。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。