Android：位图不显示图像
我正在创建一个应用程序，在该应用程序中，我的应用程序正在从SD卡拍摄图像，并在gridview中显示结果。它可以很好地处理png文件，但在jpg和jpeg文件上出现了问题，我的应用程序崩溃了。 这是我的密码：Android：位图不显示图像,android,image,file,bitmap,jpeg,Android,Image,File,Bitmap,Jpeg,我正在创建一个应用程序，在该应用程序中，我的应用程序正在从SD卡拍摄图像，并在gridview中显示结果。它可以很好地处理png文件，但在jpg和jpeg文件上出现了问题，我的应用程序崩溃了。 这是我的密码： public class CustomGallery extends Activity { private int count; private Bitmap[] thumbnails; private boolean[] thumbnailsselection; private Stri
public class CustomGallery extends Activity {
private int count;
private Bitmap[] thumbnails;
private boolean[] thumbnailsselection;
private String[] arrPath;
private ImageAdapter imageAdapter;
ArrayList<String> f = new ArrayList<String>();// list of file paths
File[] listFile;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gallery);
getFromSdcard();
GridView imagegrid = (GridView) findViewById(R.id.PhoneImageGrid);
imageAdapter = new ImageAdapter();
imagegrid.setAdapter(imageAdapter);
imagegrid.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
final int position, long id) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
CustomGallery.this);
alertDialogBuilder.setTitle(" decision");
alertDialogBuilder.setMessage("What would you like to do?");
// set positive button: Yes message
alertDialogBuilder.setPositiveButton("Hide Image",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
InputStream inStream = null;
OutputStream outStream = null;
File afile = new File(f.get(position));
try {
File bfile = new File(
"/data/data/com.mati.testprivatefolder/cache/MyPrivateFolder2/"
+ afile.getName());
inStream = new FileInputStream(afile);
outStream = new FileOutputStream(bfile);
byte[] buffer = new byte[1024];
int length;
// copy the file content in bytes
while ((length = inStream.read(buffer)) > 0) {
outStream.write(buffer, 0, length);
}
inStream.close();
outStream.close();
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
"Not!", Toast.LENGTH_LONG).show();
}
if (afile.delete()) {
Toast.makeText(getApplicationContext(),
"file deleted", Toast.LENGTH_LONG)
.show();
} else {
Toast.makeText(getApplicationContext(),
"file not deleted",
Toast.LENGTH_LONG).show();
}
}
});
// set negative button: No message
alertDialogBuilder.setNegativeButton("Open Image",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
File afile = new File(f.get(position));
String temp = afile.toString();
Toast.makeText(getApplicationContext(),
f.get(position), Toast.LENGTH_LONG)
.show();
Intent i = new Intent(getApplicationContext(),
FullImageActivity.class);
// Pass image index
i.putExtra("id", temp);
startActivity(i);
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
// show alert
alertDialog.show();
}
});
}
public void getFromSdcard() {
Intent intent = getIntent();
Bundle b = intent.getExtras();
String temp = (String) b.get("id");
if (temp.equals("DCIM")) {
File fil = Environment.getExternalStorageDirectory();
File file = new File(fil.getAbsoluteFile() + "/DCIM/");
// File file = new File("sdcard/DCIM"); //For actual phone
// File file = new File("/storage/sdcard/DCIM");
if (file.isDirectory()) {
listFile = file.listFiles();
for (int i = 0; i < listFile.length; i++) {
if (listFile[i].isDirectory()) {
} else {
f.add(listFile[i].getAbsolutePath());
}
}
}
} else {
File fil = Environment.getExternalStorageDirectory();
File file = new File(fil.getAbsoluteFile() + "/DCIM/" + temp);
// File file = new File("sdcard/DCIM"); //For actual phone
// File file = new File("/storage/sdcard/DCIM");
if (file.isDirectory()) {
listFile = file.listFiles();
for (int i = 0; i < listFile.length; i++) {
if (listFile[i].getName().endsWith(".png")
|| listFile[i].getName().endsWith(".jpg")
|| listFile[i].getName().endsWith(".jpeg")
|| listFile[i].getName().endsWith(".gif")) {
f.add(listFile[i].getAbsolutePath());
}
}
}
}
}
public class ImageAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ImageAdapter() {
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return f.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mInflater.inflate(R.layout.galleryitem, null);
holder.imageview = (ImageView) convertView
.findViewById(R.id.thumbImage);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
Bitmap myBitmap = BitmapFactory.decodeFile(f.get(position));
holder.imageview.setImageBitmap(myBitmap);
return convertView;
}
}
class ViewHolder {
ImageView imageview;
}
}
我认为你的错误很明显是java.lang.OutOfMemoryError，看看你的图片可能太大了，这会导致你的OutOfMemoryException.tnx出现问题，有什么解决办法吗？
10-24 06:04:08.745: E/AndroidRuntime(1150): FATAL EXCEPTION: main
10-24 06:04:08.745: E/AndroidRuntime(1150): Process: com.mati.testprivatefolder, PID: 1150
10-24 06:04:08.745: E/AndroidRuntime(1150): java.lang.OutOfMemoryError
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.graphics.BitmapFactory.decodeStreamInternal(BitmapFactory.java:613)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:589)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:369)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.AbsListView.obtainView(AbsListView.java:2263)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.GridView.makeAndAddView(GridView.java:1345)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.GridView.makeRow(GridView.java:345)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.GridView.fillDown(GridView.java:287)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.GridView.fillFromTop(GridView.java:421)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.GridView.layoutChildren(GridView.java:1233)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.AbsListView.onLayout(AbsListView.java:2091)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.View.layout(View.java:14817)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.ViewGroup.layout(ViewGroup.java:4631)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.View.layout(View.java:14817)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.ViewGroup.layout(ViewGroup.java:4631)
10-24 06:04:08.745: E/AndroidRuntime(1150): at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:374)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.View.layout(View.java:14817)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.ViewGroup.layout(ViewGroup.java:4631)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.View.layout(View.java:14817)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.ViewGroup.layout(ViewGroup.java:4631)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1987)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1744)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.Choreographer.doCallbacks(Choreographer.java:574)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.Choreographer.doFrame(Choreographer.java:544)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.os.Handler.handleCallback(Handler.java:733)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.os.Handler.dispatchMessage(Handler.java:95)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.os.Looper.loop(Looper.java:136)
10-24 06:04:08.745: E/AndroidRuntime(1150): at android.app.ActivityThread.main(ActivityThread.java:5017)
10-24 06:04:08.745: E/AndroidRuntime(1150): at java.lang.reflect.Method.invokeNative(Native Method)
10-24 06:04:08.745: E/AndroidRuntime(1150): at java.lang.reflect.Method.invoke(Method.java:515)
10-24 06:04:08.745: E/AndroidRuntime(1150): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
10-24 06:04:08.745: E/AndroidRuntime(1150): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
10-24 06:04:08.745: E/AndroidRuntime(1150): at dalvik.system.NativeStart.main(Native Method)