Android 文件目录测试结果

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Android 文件目录测试结果

测试代码1：

protected void onCreate(Bundle savedInstanceState) {
    Create(savedInstanceState);
    setContentView(R.layout.activity_main);

    android.util.Log.e("wenqiao", &#DataDirectory():" + android.DataDirectory().getAbsolutePath() + "n");
    android.util.Log.e("wenqiao", &#ExternalStorageDirectory():" + android.ExternalStorageDirectory().getAbsolutePath() + "n");
    android.util.Log.e("wenqiao", &#RootDirectory():" + android.RootDirectory().getAbsolutePath() + "n");
    android.util.Log.e("wenqiao", &#DownloadCacheDirectory():" + android.DownloadCacheDirectory().getAbsolutePath());
    /**
     * 这个方法接收一个参数，表明目录所放的文件的类型，传入的参数是Environment类中的DIRECTORY_XXX静态变量，比如DIRECTORY_DCIM等.
     * 注意：传入的类型参数不能是null，返回的目录路径有可能不存在，所以必须在使用之前确认一下，比如使用File.mkdirs创建该路径。
     */
    java.io.File path = android.ExternalStoragePublicDirectory(android.os.Environment.DIRECTORY_ALARMS);
    if( !ists() ){
        path.mkdirs();
    }
    /* /storage/emulated/0/Alarms */
    android.util.Log.e("wenqiao", &#ExternalStoragePublicDirectory():" + android.ExternalStoragePublicDirectory(android.os.Environment.DIRECTORY_ALARMS));

    /**
     * contextWrapper
     */
    android.util.Log.e("wenqiao", "getCacheDir():" + CacheDir().getAbsolutePath());
    android.util.Log.e("wenqiao", "getFilesDir():" + FilesDir().getAbsolutePath());
    android.util.Log.e("wenqiao", "getExternalCacheDir():" + ExternalCacheDir().getAbsolutePath());
    android.util.Log.e("wenqiao", "getExternalFilesDir():" + ExternalFilesDir(android.os.Environment.DIRECTORY_DCIM).getAbsolutePath());
    android.util.Log.e("wenqiao", "getPackageResourcePath():" + PackageResourcePath());
    android.util.Log.e("wenqiao", "getDir():" + Dir("myfile", t.Context.MODE_PRIVATE));
    }

输出结果（myapplication为包名）：

ExternalStorageDirectory():/storage/emulated/0
RootDirectory():/system
DownloadCacheDirectory():/data/cache
ExternalStoragePublicDirectory():/storage/emulated/0/Alarms
getCacheDir():/data/user/application/cache
getFilesDir():/data/user/application/files
getExternalCacheDir():/storage/emulated/0/Android/application/cache
getExternalFilesDir():/storage/emulated/0/Android/application/files/DCIM
getPackageResourcePath():/data/application-1/base.apkgetDir():/data/user/application/app_myfile

测试代码2：

public static void getEnvironmentDirectories() {
        android.util.Log.e(LOG_TAG, "getRootDirectory(): "
                + android.RootDirectory().toString());
        android.util.Log.e(LOG_TAG, "getDataDirectory(): "
                + android.DataDirectory().toString());
        android.util.Log.e(LOG_TAG, "getDownloadCacheDirectory(): "
                + android.DownloadCacheDirectory().toString());
        android.util.Log.e(LOG_TAG, "getExternalStorageDirectory(): "
                + android.ExternalStorageDirectory().toString());

        android.util.Log.e(
                LOG_TAG,
                "getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES): "
                        + android.ExternalStoragePublicDirectory(
                                android.os.Environment.DIRECTORY_PICTURES).toString());

//        Log.i(
//                LOG_TAG,
//                "isExternalStorageEmulated(): "
//                        + Environment.isExternalStorageEmulated());
//
//        Log.i(
//                LOG_TAG,
//                "isExternalStorageRemovable(): "
//                        + Environment.isExternalStorageRemovable());

    }

    public static void t.Context context) {

        android.util.Log.e(LOG_TAG, &#FilesDir(): "
                + FilesDir().toString());
        android.util.Log.e(LOG_TAG, &#CacheDir(): "
                + CacheDir().toString());

        // methods below will return null if the permissions denied
        android.util.Log.e(
                LOG_TAG,
                &#ExternalFilesDir(Environment.DIRECTORY_MOVIES): "
                        + context
                                .getExternalFilesDir(android.os.Environment.DIRECTORY_MOVIES));

        android.util.Log.e(
                LOG_TAG,
                &#ExternalCacheDir(): "
                        + ExternalCacheDir());
    }

测试结果2：

getRootDirectory(): /system
getDataDirectory(): /data
getDownloadCacheDirectory(): /data/cache
getExternalStorageDirectory(): /storage/emulated/0
getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES): /storage/emulated/0/Pictures
FilesDir(): /data/user/application/files
CacheDir(): /data/user/application/cache
ExternalFilesDir(Environment.DIRECTORY_MOVIES): /storage/emulated/0/Android/application/files/Movies
ExternalCacheDir(): /storage/emulated/0/Android/application/cache

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标签：文件测试目录 Android

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