Android 图片压缩
添加Luban库 库地址:
//https://github.com/Curzibn/Luban
implementation 'top.zibin:Luban:1.1.8' //https://github.com/Curzibn/Luban
使用方法:
package com.example.sniffapplication.Utils; import android.content.Context; import android.net.Uri; import android.text.TextUtils; import java.io.File; import java.util.List; import top.zibin.luban.CompressionPredicate; import top.zibin.luban.Luban; import top.zibin.luban.OnCompressListener; public class ImageUtil { //图片压缩 public static void Compression(Context content, Uri uri, OnCompressListener compressListener) { String path= FileUtil.getFilePathFromURI(content,uri); Luban.with(content) .load(path) .ignoreBy(100) .setTargetDir(getPath(content)) .setCompressListener(compressListener).launch(); } private static String getPath(Context content) { return content.getCacheDir().getPath(); } }
private void CompressionImage(Uri uri, int imageIndex) { String realFileName = FileUtil.getFileRealNameFromUri(this, uri); ImageUtil.Compression(this, uri, new OnCompressListener() { @Override public void onStart() { // TODO 压缩开始前调用,可以在方法内启动 loading UI } @Override public void onSuccess(File file) { runOnUiThread(new Runnable() { @Override public void run() { // TODO 压缩成功后调用,返回压缩后的图片文件 UploadImage(file.getPath(), imageIndex,realFileName); } }); } @Override public void onError(Throwable e) { e.printStackTrace(); // TODO 当压缩过程出现问题时调用 } }); }
public static String getFilePathFromURI(Context context, Uri contentUri) { File rootDataDir = context.getExternalFilesDir(null); // MyApplication.getMyContext().getExternalFilesDir(null).getPath(); String fileName = getFileName(contentUri); if (!TextUtils.isEmpty(fileName)) { File copyFile = new File(rootDataDir + File.separator + fileName); copyFile(context, contentUri, copyFile); return copyFile.getAbsolutePath(); } return null; }
注意事项:load需要传入绝对路径 如果传入的是
android.net.Uri 压缩成功后返回的是一个空的File