问题
I have ImageView and I want to share its image.
Following is my code,
btshare.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
View content = findViewById(R.id.full_image_view);
content.setDrawingCacheEnabled(true);
Bitmap bitmap = content.getDrawingCache();
File root = Environment.getExternalStorageDirectory();
File cachePath = new File(root.getAbsolutePath() + "/DCIM/Camera/image.jpg");
try
{
root.createNewFile();
FileOutputStream ostream = new FileOutputStream(root);
bitmap.compress(CompressFormat.JPEG, 100, ostream);
ostream.close();
}
catch (Exception e)
{
e.printStackTrace();
}
Intent shareIntent = new Intent(Intent.ACTION_SEND);
Uri phototUri = Uri.parse("/DCIM/Camera/image.jpg");
shareIntent.setData(phototUri);
shareIntent.setType("image/*");
shareIntent.putExtra(Intent.EXTRA_STREAM, phototUri);
startActivity(Intent.createChooser(shareIntent, "Share Via"));
}
});
when i press the button i get these errors ?
01-13 06:00:19.282: W/System.err(6199): java.io.FileNotFoundException: /storage/emulated/0: open failed: EISDIR (Is a directory)
01-13 06:00:19.286: W/System.err(6199): at libcore.io.IoBridge.open(IoBridge.java:409)
01-13 06:00:19.286: W/System.err(6199): at java.io.FileOutputStream.<init>(FileOutputStream.java:88)
01-13 06:00:19.294: W/System.err(6199): at java.io.FileOutputStream.<init>(FileOutputStream.java:73)
01-13 06:00:19.294: W/System.err(6199): at com.safshari.mandegar.FullImageActivity$3.onClick(FullImageActivity.java:116)
01-13 06:00:19.294: W/System.err(6199): at android.view.View.performClick(View.java:4240)
01-13 06:00:19.294: W/System.err(6199): at android.view.View$PerformClick.run(View.java:17721)
01-13 06:00:19.298: W/System.err(6199): at android.os.Handler.handleCallback(Handler.java:730)
01-13 06:00:19.298: W/System.err(6199): at android.os.Handler.dispatchMessage(Handler.java:92)
01-13 06:00:19.298: W/System.err(6199): at android.os.Looper.loop(Looper.java:137)
01-13 06:00:19.302: W/System.err(6199): at android.app.ActivityThread.main(ActivityThread.java:5103)
01-13 06:00:19.302: W/System.err(6199): at java.lang.reflect.Method.invokeNative(Native Method)
01-13 06:00:19.302: W/System.err(6199): at java.lang.reflect.Method.invoke(Method.java:525)
01-13 06:00:19.302: W/System.err(6199): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
01-13 06:00:19.306: W/System.err(6199): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-13 06:00:19.306: W/System.err(6199): at dalvik.system.NativeStart.main(Native Method)
01-13 06:00:19.310: W/System.err(6199): Caused by: libcore.io.ErrnoException: open failed: EISDIR (Is a directory)
01-13 06:00:19.310: W/System.err(6199): at libcore.io.Posix.open(Native Method)
01-13 06:00:19.310: W/System.err(6199): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
01-13 06:00:19.310: W/System.err(6199): at libcore.io.IoBridge.open(IoBridge.java:393)
01-13 06:00:19.314: W/System.err(6199): ... 14 more
01-13 06:00:19.618: E/Genymotion(489): Could not open '/sys/class/power_supply/genymotion_fake_path/present'
what should I do and what permissions my program needs ? I have already declared following permissions,
<uses-permission android:name="android.permission.SET_WALLPAPER"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
回答1:
Try below code to share your image:
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("image/*");
share.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(root.getAbsolutePath() + "/DCIM/Camera/image.jpg"));
startActivity(Intent.createChooser(share,"Share via"));
Add these permissions to AndroidMenifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
回答2:
Final Code so anyone can use to save and share image from imageview :
View content = findViewById(R.id.full_image_view);
content.setDrawingCacheEnabled(true);
Bitmap bitmap = content.getDrawingCache();
File root = Environment.getExternalStorageDirectory();
File cachePath = new File(root.getAbsolutePath() + "/DCIM/Camera/image.jpg");
try {
cachePath.createNewFile();
FileOutputStream ostream = new FileOutputStream(cachePath);
bitmap.compress(CompressFormat.JPEG, 100, ostream);
ostream.close();
} catch (Exception e) {
e.printStackTrace();
}
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("image/*");
share.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(cachePath));
startActivity(Intent.createChooser(share,"Share via"));
}
happy coding
回答3:
You need to add this permission
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
回答4:
try creating the cache to store this image first and then share it because you can only share images which are public to other applications also.You cannot share the content which are private to you application.
use Context.getExternalCacheDir() to create cache and then share the content of this cache
回答5:
Bundle intent = getIntent().getExtras();
cardView = (CardView) findViewById(R.id.card);
final String query = intent.getString("Query1");
db = new DataBaseHelper(Image.this);
Cursor c = db.getData(query);
if (c.getCount() != 0) {
c.moveToFirst();
do {
image = c.getString(5);
title=c.getString(3);
} while (c.moveToNext());
}
txt.setText(title);
img.setImageDrawable(getResources()
.getDrawable(getResources().getIdentifier(image, "drawable", getPackageName())));
来源：https://stackoverflow.com/questions/21084866/how-to-share-image-of-imageview