之前搞二次開發,發現版本太老,遇到各種問題,關於7.0的嚴苛模式,這裏做個筆記下次直接CV。
推薦配置
配置provider
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="apk包名.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
file_paths
<?xml version="1.0" encoding="utf-8"?>
<resource xmlns:android="http://schemas.android.com/apk/res/android">
<root-path name="root" path=""/>
<files-path name="files" path=""/>
<cache-path name="cache" path=""/>
<external-path name="external" path="."/>
<external-files-path name="external_files" path=""/>
<external-cache-path name="external_cache" path=""/>
</resource>
存文件
//插入圖片
private void insertImage() {
mImageFile = new File(Environment.getExternalStorageDirectory(), getTime() + ".png");
// mImageUri = Uri.fromFile(mImageFile);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
mImageUri = FileProvider.getUriForFile(this, "apk包名.fileprovider", mImageFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageUri);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);//這裏加入flag
startActivityForResult(intent, TAKE_IMAGE);
}
//插入視頻
private void insertVideo() {
mVideoFile = new File(Environment.getExternalStorageDirectory(), getTime() + ".mp4");
// mVideoUri = Uri.fromFile(mVideoFile);
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
mVideoUri = FileProvider.getUriForFile(this, "apk包名.fileprovider", mVideoFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, mVideoUri);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);//這裏加入flag
startActivityForResult(intent, TAKE_VIDEO);
}
取文件
public void openFile(Context context, String path) {
File file = new File(path);
if (null != file && !file.exists()) {
Toast.makeText(context, "打開失敗,請重試!", Toast.LENGTH_SHORT).show();
return;
}
try {
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//設置intent的Action屬性
intent.setAction(Intent.ACTION_VIEW);
//獲取文件file的MIME類型
String type = getMIMEType(file);
//設置intent的data和Type屬性。
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);//這裏加入flag
intent.setDataAndType(FileProvider.getUriForFile(context, "apk包名.fileprovider", file), type);
//7.0以下使用
// intent.setDataAndType(/*uri*/Uri.fromFile(file), type);
//跳轉
context.startActivity(intent);
} catch (ActivityNotFoundException e) {
Toast.makeText(context, "打開失敗,請重試!", Toast.LENGTH_SHORT).show();
}
}
private String getMIMEType(File file) {
String type = "*/*";
String fName = file.getName();
//獲取後綴名前的分隔符"."在fName中的位置。
int dotIndex = fName.lastIndexOf(".");
if (dotIndex < 0) {
return type;
}
/* 獲取文件的後綴名*/
String end = fName.substring(dotIndex, fName.length()).toLowerCase();
if (end == "") return type;
//在MIME和文件類型的匹配表中找到對應的MIME類型。
for (int i = 0; i < MIME_MapTable.length; i++) { //MIME_MapTable??在這裏你一定有疑問,這個MIME_MapTable是什麼?
if (end.equals(MIME_MapTable[i][0]))
type = MIME_MapTable[i][1];
}
return type;
}
private final String[][] MIME_MapTable = {
//{後綴名,MIME類型}
{".3gp", "video/3gpp"},
{".apk", "application/vnd.android.package-archive"},
{".asf", "video/x-ms-asf"},
{".avi", "video/x-msvideo"},
{".bin", "application/octet-stream"},
{".bmp", "image/bmp"},
{".c", "text/plain"},
{".class", "application/octet-stream"},
{".conf", "text/plain"},
{".cpp", "text/plain"},
{".doc", "application/msword"},
{".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},
{".xls", "application/vnd.ms-excel"},
{".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
{".exe", "application/octet-stream"},
{".gif", "image/gif"},
{".gtar", "application/x-gtar"},
{".gz", "application/x-gzip"},
{".h", "text/plain"},
{".htm", "text/html"},
{".html", "text/html"},
{".jar", "application/java-archive"},
{".java", "text/plain"},
{".jpeg", "image/jpeg"},
{".jpg", "image/jpeg"},
{".js", "application/x-javascript"},
{".log", "text/plain"},
{".m3u", "audio/x-mpegurl"},
{".m4a", "audio/mp4a-latm"},
{".m4b", "audio/mp4a-latm"},
{".m4p", "audio/mp4a-latm"},
{".m4u", "video/vnd.mpegurl"},
{".m4v", "video/x-m4v"},
{".mov", "video/quicktime"},
{".mp2", "audio/x-mpeg"},
{".mp3", "audio/x-mpeg"},
{".mp4", "video/mp4"},
{".mpc", "application/vnd.mpohun.certificate"},
{".mpe", "video/mpeg"},
{".mpeg", "video/mpeg"},
{".mpg", "video/mpeg"},
{".mpg4", "video/mp4"},
{".mpga", "audio/mpeg"},
{".msg", "application/vnd.ms-outlook"},
{".ogg", "audio/ogg"},
{".pdf", "application/pdf"},
{".png", "image/png"},
{".pps", "application/vnd.ms-powerpoint"},
{".ppt", "application/vnd.ms-powerpoint"},
{".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
{".prop", "text/plain"},
{".rc", "text/plain"},
{".rmvb", "audio/x-pn-realaudio"},
{".rtf", "application/rtf"},
{".sh", "text/plain"},
{".tar", "application/x-tar"},
{".tgz", "application/x-compressed"},
{".txt", "text/plain"},
{".wav", "audio/x-wav"},
{".wma", "audio/x-ms-wma"},
{".wmv", "audio/x-ms-wmv"},
{".wps", "application/vnd.ms-works"},
{".xml", "text/plain"},
{".z", "application/x-compress"},
{".zip", "application/x-zip-compressed"},
{"", "*/*"}
};
快速解決
直接關閉嚴苛模式
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
builder.detectFileUriExposure();
}