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Đăng Nhập![[Android Tutorial] Save Image to Sdcard Empty](https://2img.net/i/empty.gif)
Wed Jun 18, 2014 9:32 am
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![[Android Tutorial] Save Image to Sdcard Kn3Tm6L](https://i.imgur.com/kn3Tm6L.png)
Chú ý :Trong manifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
DemoSaveImage.java
Chú ý :Trong manifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
DemoSaveImage.java
- Code:
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class DemoSaveImage extends Activity {
ImageView imageView;
Button btSave ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_demo_save_image);
imageView = (ImageView)findViewById(R.id.imageView1);
btSave = (Button)findViewById(R.id.btSave);
imageView.setImageDrawable(getResources().getDrawable(R.drawable.ic_launcher));
btSave.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
// TODO Auto-generated method stub
BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
Bitmap bitmap = drawable.getBitmap();
File filepath = Environment.getExternalStorageDirectory();
// Create a new folder in SD Card
File dir = new File(filepath.getAbsolutePath());
dir.mkdirs();
File file = new File(dir, "demosave.png");
boolean success = false;
// Encode the file as a PNG image.
FileOutputStream outStream;
try {
outStream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream);
/* 100 to keep full quality of the image */
outStream.flush();
outStream.close();
success = true;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.demo_save_image, menu);
return true;
}
}
- Code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_gravity="center"
tools:context=".DemoSaveImage" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="68dp"
android:src="@drawable/ic_launcher" />
<Button
android:id="@+id/btSave"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/imageView1"
android:layout_alignLeft="@+id/imageView1"
android:layout_marginBottom="59dp"
android:layout_marginLeft="45dp"
android:text="Save" />
</LinearLayout>