Android静默拍照

实现在用户无感知的情况下拍照并保存在本地

package com.ppdai.lwcamerademo;

import android.app.Application;
import android.test.ApplicationTestCase;

/**
 * Testing Fundamentals
 */
public class ApplicationTest extends ApplicationTestCase {
    public ApplicationTest（） {
        super（Application.class）;
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2017-06-09 13:11  LWCameraDemo\
     文件         105  2017-06-08 15:33  LWCameraDemo\.gitignore
     目录           0  2017-06-08 15:33  LWCameraDemo\.gradle\
     目录           0  2017-06-08 16:03  LWCameraDemo\.gradle\2.10\
     目录           0  2017-06-08 15:33  LWCameraDemo\.gradle\2.10\taskArtifacts\
     文件          31  2017-06-08 15:33  LWCameraDemo\.gradle\2.10\taskArtifacts\cache.properties
     文件          17  2017-06-09 11:14  LWCameraDemo\.gradle\2.10\taskArtifacts\cache.properties.lock
     文件      137462  2017-06-09 11:14  LWCameraDemo\.gradle\2.10\taskArtifacts\fileHashes.bin
     文件     2415404  2017-06-09 11:14  LWCameraDemo\.gradle\2.10\taskArtifacts\fileSnapshots.bin
     文件       20342  2017-06-08 19:01  LWCameraDemo\.gradle\2.10\taskArtifacts\outputFileStates.bin
     文件       59130  2017-06-09 11:14  LWCameraDemo\.gradle\2.10\taskArtifacts\taskArtifacts.bin
     目录           0  2017-06-08 16:03  LWCameraDemo\.gradle\2.10\tasks\
     目录           0  2017-06-08 16:03  LWCameraDemo\.gradle\2.10\tasks\_app_compileDebugJavaWithJavac\
     目录           0  2017-06-08 16:03  LWCameraDemo\.gradle\2.10\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\
     文件       99218  2017-06-09 11:14  LWCameraDemo\.gradle\2.10\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\localClassSetAnalysis.bin
     文件          17  2017-06-09 11:14  LWCameraDemo\.gradle\2.10\tasks\_app_compileDebugJavaWithJavac\localClassSetAnalysis\localClassSetAnalysis.lock
     目录           0  2017-06-08 16:03  LWCameraDemo\.gradle\2.10\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\
     文件       19938  2017-06-09 11:14  LWCameraDemo\.gradle\2.10\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\localJarClasspathSnapshot.bin
     文件          17  2017-06-09 11:14  LWCameraDemo\.gradle\2.10\tasks\_app_compileDebugJavaWithJavac\localJarClasspathSnapshot\localJarClasspathSnapshot.lock
     目录           0  2017-06-09 13:11  LWCameraDemo\.idea\
     文件          12  2017-06-08 15:33  LWCameraDemo\.idea\.name
     文件         686  2017-06-08 15:33  LWCameraDemo\.idea\compiler.xml
     目录           0  2017-06-08 15:33  LWCameraDemo\.idea\copyright\
     文件          76  2017-06-08 15:33  LWCameraDemo\.idea\copyright\profiles_settings.xml
     文件         159  2017-06-08 15:33  LWCameraDemo\.idea\encodings.xml
     文件         739  2017-06-08 15:33  LWCameraDemo\.idea\gradle.xml
     目录           0  2017-06-08 15:47  LWCameraDemo\.idea\libraries\
     文件         645  2017-06-08 15:33  LWCameraDemo\.idea\libraries\animated_vector_drawable_25_1_0.xml
     文件         761  2017-06-08 15:47  LWCameraDemo\.idea\libraries\appcompat_v7_25_1_0.xml
     文件         526  2017-06-08 15:33  LWCameraDemo\.idea\libraries\hamcrest_core_1_3.xml
     文件         477  2017-06-08 15:33  LWCameraDemo\.idea\libraries\junit_4_12.xml
............此处省略75个文件信息