图片保存到sd卡

?

?

?import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;

/**
?* This Activty shows how to save an image (Bitmap) to the filesystem, with FileOutputStream object
?* @author FaYnaSoft Labs
?*
?*/
public class Main extends Activity {
?private Bitmap bitmap;

??? @Override
??? public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? setContentView(R.layout.main);

??????? bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.icon);

??????? FileOutputStream fos = null;
??????? try {
??????????? fos = openFileOutput("image", Context.MODE_PRIVATE);
??????????? bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
??????? } catch (FileNotFoundException e) {
??????? } finally {
??????????? if (fos != null) {
??????????????? try {
??????????????????? fos.flush();
??????????????????? fos.close();
??????????????? } catch (IOException e) {
??????????????? }
??????????? }
??????? }
??? }
}

1 楼 twins-wolf 2011-03-23 这个只能存储到应用的/data/data/com.faynasoftlabs.tutorial.android.imagesavingexample/files里， 而不是sd卡中，这是部分log
===========================================
03-23 13:56:07.639: WARN/System.err(5972): java.lang.IllegalArgumentException: File /mnt/sdcard/appMessage.png contains a path separator
03-23 13:56:07.639: WARN/System.err(5972): at android.app.ContextImpl.makeFilename(ContextImpl.java:1693)
03-23 13:56:07.639: WARN/System.err(5972): at android.app.ContextImpl.openFileOutput(ContextImpl.java:414)
03-23 13:56:07.639: WARN/System.err(5972): at android.content.ContextWrapper.openFileOutput(ContextWrapper.java:158)
===========================================
可以实现的方案如下：
用InputStream is=this.getResources().openRawResource(R.drawable.icon);
再讲InputStream 转成 byte[],网上有方法
最后将这个byte[]写入到sd卡中去。 欢迎指正twins-wolf@163.com