如何将安卓asset的图片拷贝到sd卡
核心代码如下:
public void WriteToSD(){
if(!isExist()){
write();
}
}
private void write(){
InputStream inputStream;
try {
inputStream = this.getResources().getAssets().open(mFileName);
File file = new File(filePath);
if(!file.exists()){
file.mkdirs();
}
FileOutputStream fileOutputStream = new FileOutputStream(filePath + "/"+mFileName);
byte[] buffer = new byte[512];
int count = 0;
while((count = inputStream.read(buffer)) > 0){
fileOutputStream.write(buffer, 0 ,count);
}
fileOutputStream.flush();
fileOutputStream.close();
inputStream.close();
System.out.println("success");
} catch (IOException e) {
e.printStackTrace();
}
}
private boolean isExist(){
File file = new File(filePath + "/"+mFileName);
if(file.exists()){
return true;
}else{
return false;
}
}如何将app的数据库导出到sd卡上
private void copyDatabase() {
File file = new File("/data/data/com.pic.optimize/databases");
String[] array = file.list();
for(int i=0;i<array.length;i++) {
Log.d("TAG","=====array[i]="+array[i]);
}
File f = new File("/data/data/com.pic.optimize/databases/record107994554.db");
String sdcardPath = Environment.getExternalStorageDirectory().getAbsolutePath();
File o = new File(sdcardPath+"/record107994554.db");
if(f.exists()) {
FileChannel outF;
try {
outF = new FileOutputStream(o).getChannel();
new FileInputStream(f).getChannel().transferTo(0, f.length(),outF);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(mContext, "完成", Toast.LENGTH_SHORT).show();
}
}然后导入到电脑上用Navicat打开就可以看到表结构了
点击查看更多内容
为 TA 点赞
评论
共同学习,写下你的评论
评论加载中...
作者其他优质文章
正在加载中
感谢您的支持,我会继续努力的~
扫码打赏,你说多少就多少
赞赏金额会直接到老师账户
支付方式
打开微信扫一扫,即可进行扫码打赏哦
