標籤:並且 cep state enc 技術 ssi mount provider rri
1、在AndroidManifest.xml中添加如下代碼
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"
tools:ignore="ProtectedPermissions" />
<application
<provider
android:authorities="${applicationId}.provider"
android:name="android.support.v4.content.FileProvider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths">
</meta-data>
</provider>
</application></manifest>
2、在res目錄下建立一個xml檔案夾,並且建立一個provider_paths的xml檔案
<?xml version="1.0" encoding="utf-8"?><paths xmlns:android="http://schemas.android.com/apk/res/android"> <external-path name="external_files" path="."/></paths>
3、主檔案中開啟相機
Intent intent=new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
try {
//fileUri=Uri.fromFile(createMediaFile());如果這樣寫會報錯
fileUri= FileProvider.getUriForFile(CameraVideoActivity.this,getApplicationContext().getPackageName() + ".provider",createMediaFile());//這是正確的寫法
} catch (IOException e) {
e.printStackTrace();
}
intent.putExtra(MediaStore.EXTRA_OUTPUT,fileUri);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY,1);
startActivityForResult(intent,1);
4、建立並儲存視頻的方法
private File createMediaFile() throws IOException {
if(Utils.checkSDCardAvaliable()) {
if ((Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))) {
// 選擇自己的檔案夾
String path = Environment.getExternalStorageDirectory().getPath() + "/myvideo/";
// Constants.video_url 是一個常量,代表存放視頻的檔案夾
File mediaStorageDir = new File(path);
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.e("TAG", "檔案夾建立失敗");
return null;
}
}
// 檔案根據當前的毫秒數給自己命名
String timeStamp = String.valueOf(System.currentTimeMillis());
timeStamp = timeStamp.substring(7);
String imageFileName = "V" + timeStamp;
String suffix = ".mp4";
File mediaFile = new File(mediaStorageDir + File.separator + imageFileName + suffix);
return mediaFile;
}
}
return null;
}
}
5、重寫onActivityResult方法
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode==1)
{
if(resultCode==RESULT_OK)
{
Toast.makeText(this, "Video saved to:\n" +
data.getData(), Toast.LENGTH_LONG).show();
vv_play.setVideoURI(fileUri);
vv_play.requestFocus();
}
}
}
6、DDMS
android 調用系統相機錄影並儲存