Chi*_*rag 28
将此代码放在onDestroy()中以清除应用程序缓存:
void onDestroy() { super.onDestroy();
try {
trimCache(this);
// Toast.makeText(this,"onDestroy " ,Toast.LENGTH_LONG).show();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void trimCache(Context context) {
try {
File dir = context.getCacheDir();
if (dir != null && dir.isDirectory()) {
deleteDir(dir);
}
} catch (Exception e) {
// TODO: handle exception
}
}
public static boolean deleteDir(File dir) {
if (dir != null && dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; i < children.length; i++) {
boolean success = deleteDir(new File(dir, children[i]));
if (!success) {
return false;
}
}
}
// The directory is now empty so delete it
return dir.delete();
}
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net*_*ein 12
您可以使用此处引用的代码:
File cacheDir = context.getCacheDir();
File[] files = cacheDir.listFiles();
if (files != null) {
for (File file : files)
file.delete();
}
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科特林:
您也可以使用File.deleteRecursively()标准库来删除所有子目录
要删除应用程序的整个缓存目录:
context.cacheDir.deleteRecursively()
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删除缓存中的特定目录及其子目录
File(context.cacheDir, "child directory name").deleteRecursively()
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感谢您的建议@elyeante
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