我试图用android上的分享按钮发送图像（电子邮件，蓝牙，mms）。 但当我点击其中一个像gmail，应用程序强制关闭它自己 显示错误Log Cat，这是我的代码：
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "subject");
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,new String[]{});
emailIntent.setType("text/plain");
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,"my text");
emailIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
emailIntent.setType("image/png");
Bitmap mIcon_val =null;
URL newurl;
try {
newurl = new URL(ImageUrl);
mIcon_val = BitmapFactory.decodeStream(newurl.openConnection() .getInputStream());
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
emailIntent.putExtra(Intent.EXTRA_STREAM, mIcon_val);
startActivity(Intent.createChooser(emailIntent, getResources().getString(R.string.share)));
错误日志：
02-05 11:10:15.500: E/AndroidRuntime(10724): FATAL EXCEPTION: main
02-05 11:10:15.500: E/AndroidRuntime(10724): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.google.android.gm/com.google.android.gm.ComposeActivity}: java.lang.ClassCastException: android.graphics.Bitmap
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.os.Handler.dispatchMessage(Handler.java:99)
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.os.Looper.loop(Looper.java:130)
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.app.ActivityThread.main(ActivityThread.java:3687)
02-05 11:10:15.500: E/AndroidRuntime(10724): at java.lang.reflect.Method.invokeNative(Native Method)
02-05 11:10:15.500: E/AndroidRuntime(10724): at java.lang.reflect.Method.invoke(Method.java:507)
02-05 11:10:15.500: E/AndroidRuntime(10724): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
02-05 11:10:15.500: E/AndroidRuntime(10724): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
02-05 11:10:15.500: E/AndroidRuntime(10724): at dalvik.system.NativeStart.main(Native Method)
02-05 11:10:15.500: E/AndroidRuntime(10724): Caused by: java.lang.ClassCastException: android.graphics.Bitmap
02-05 11:10:15.500: E/AndroidRuntime(10724): at com.google.android.gm.ComposeArea.initFromExtras(ComposeArea.java:683)
02-05 11:10:15.500: E/AndroidRuntime(10724): at com.google.android.gm.ComposeActivity.initFromExtras(ComposeActivity.java:1482)
02-05 11:10:15.500: E/AndroidRuntime(10724): at com.google.android.gm.ComposeActivity.finishOnCreateAfterAccountSelected(ComposeActivity.java:1020)
02-05 11:10:15.500: E/AndroidRuntime(10724): at com.google.android.gm.ComposeActivity.onCreate(ComposeActivity.java:259)
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
02-05 11:10:15.500: E/AndroidRuntime(10724): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
02-05 11:10:15.500: E/AndroidRuntime(10724): ... 11 more
02-05 11:10:15.570: E/liblog(1506): failed to call dumpstate
02-05 11:10:15.601: E/(1506): Dumpstate > /data/log/dumpstate_app_error
感谢“Abhishek Agarwal”，这是我的修复和工作：
emailIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
emailIntent.setType("image/png");
URL url2 = null;
try {
url2 = new URL (ImageUrl);
} catch (MalformedURLException e1) {
e1.printStackTrace();
}
InputStream input = null;
try {
input = url2.openStream();
} catch (IOException e1) {
e1.printStackTrace();
}
File storagePath = null;
try {
storagePath = Environment.getExternalStorageDirectory();
OutputStream output = new FileOutputStream (new File(storagePath,"imgforother.png"));
try {
byte[] buffer = new byte[500];
int bytesRead = 0;
while ((bytesRead = input.read(buffer, 0, buffer.length)) >= 0) {
output.write(buffer, 0, bytesRead);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
input.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
File file = new File(storagePath,"imgforother.png");
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
startActivity(Intent.createChooser(emailIntent, getResources().getString(R.string.share)));
答案 0 :(得分：1)
您在接受ImageURI时在EXTRA_STREAM中发送位图，因此将其更改为uri
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.setType("image/*");
emailIntent.putExtra(Intent.EXTRA_SUBJECT, SUBJECT);
emailIntent.putExtra(Intent.EXTRA_TEXT, TEXT);
emailIntent.putExtra(Intent.EXTRA_STREAM, savebitmap(bitmap));
startActivity(Intent.createChooser(emailIntent, "SEnd Via"));
saveBitmap方法
private Uri savebitmap(Bitmap bmp) {
String temp="Share";
String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
OutputStream outStream = null;
String path = Environment.getExternalStorageDirectory()
.toString();
new File(path + "/TempFolder").mkdirs();
File file = new File(path+"/TempFolder", temp + ".png");
if (file.exists()) {
file.delete();
file = new File(path+"/TempFolder", temp + ".png");
}
try {
outStream = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();
} catch (Exception e) {
e.printStackTrace();
return null;
}
return Uri.fromFile(file);
}
在manifest.xml中提供 WRITE_EXTERNAL_STORAGE 权限