我制作的应用看起来有点像蛇。 有一个大的红色块，每当你触摸屏幕中某处有一个大红色块的小白色块时，会弹出另一个小块。重复约30秒。但现在我想知道如何让人们拍摄自己的头像，并将其用作红色块。所以你的脸需要吃白块。我已经搜索了一下，我看到Smosh Super Head Esploder X有一些我想要的功能。 请帮帮我！
答案 0 :(得分：0)
使用此功能，它可以帮助您从相机和图库中拍照..
/*captureImageInitialization Method
* to select image from gallery or pick through camera
*/
private void captureImageInitialization() {
/**
* a selector dialog to display two image source options, from camera
* ‘Take from camera’ and from existing files ‘Select from gallery’
*/
final String[] items = new String[] { "Take from camera","Select from gallery" };
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(),android.R.layout.select_dialog_item, items);
AlertDialog.Builder builder = new AlertDialog.Builder(getBaseContext());
builder.setTitle("Select Image");
builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
/*
* (non-Javadoc)
* @see android.content.DialogInterface.OnClickListener#onClick(android.content.DialogInterface, int)
*/
public void onClick(DialogInterface dialog, int item) { // pick from
// camera
if (item == 0){
/**
* To take a photo from camera, pass intent action
* ‘MediaStore.ACTION_IMAGE_CAPTURE‘ to open the camera app.
*/
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
/**
* Also specify the Uri to save the image on specified path
* and file name. Note that this Uri variable also used by
* gallery app to hold the selected image path.
*/
mImageCaptureUri = Uri.fromFile(new File(Environment
.getExternalStorageDirectory(), "tmp_avatar_"
+ String.valueOf(System.currentTimeMillis())
+ ".jpg"));
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
mImageCaptureUri);
try {
intent.putExtra("return-data", true);
startActivityForResult(intent, PICK_FROM_CAMERA);
}catch (ActivityNotFoundException e) {
e.printStackTrace();
}
} else{
// pick from file
/**
* To select an image from existing files, use
* Intent.createChooser to open image chooser. Android will
* automatically display a list of supported applications,
* such as image gallery or file manager.
*/
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,
"Complete action using"), PICK_FROM_FILE);
}
}
});
dialog = builder.create();
}
/*
* (non-Javadoc)
* @see android.app.Fragment#onActivityResult(int, int, android.content.Intent)
*/
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != Activity.RESULT_OK)
return;
switch (requestCode) {
case PICK_FROM_CAMERA:
/**
* After taking a picture, do the crop
*/
doCrop();
break;
case PICK_FROM_FILE:
/**
* After selecting image from files, save the selected path
*/
mImageCaptureUri = data.getData();
doCrop();
break;
case CROP_FROM_CAMERA:
Bundle extras = data.getExtras();
/**
* After cropping the image, get the bitmap of the cropped image and
* display it on imageview.
*/
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
imageofuser.setImageBitmap(photo);
}
File f = new File(mImageCaptureUri.getPath());
/**
* Delete the temporary image
*/
if (f.exists())
f.delete();
break;
}
}
/*doCrop() method
* this method crop the selected image and set to imageview
*/
private void doCrop() {
final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
/**
* Open image crop app by starting an intent
* ‘com.android.camera.action.CROP‘.
*/
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setType("image/*");
/**
* Check if there is image cropper app installed.
*/
List<ResolveInfo> list = getBaseContext().getPackageManager().queryIntentActivities(intent, 0);
int size = list.size();
/**
* If there is no image cropper app, display warning message
*/
if (size == 0) {
Toast.makeText(getBaseContext(), "Can not find image crop app",Toast.LENGTH_SHORT).show();
return;
} else {
/**
* Specify the image path, crop dimension and scale
*/
intent.setData(mImageCaptureUri);
intent.putExtra("outputX", 200);
intent.putExtra("outputY", 200);
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("scale", true);
intent.putExtra("return-data", true);
/**
* There is posibility when more than one image cropper app exist,
* so we have to check for it first. If there is only one app, open
* then app.
*/
if (size==1){
Intent i = new Intent(intent);
ResolveInfo res = list.get(0);
i.setComponent(new ComponentName(res.activityInfo.packageName,
res.activityInfo.name));
startActivityForResult(i, CROP_FROM_CAMERA);
} else {
/**
* If there are several app exist, create a custom chooser to
* let user selects the app.
*/
for(ResolveInfo res : list) {
final CropOption co = new CropOption();
co.title = getBaseContext().getPackageManager().getApplicationLabel(
res.activityInfo.applicationInfo);
co.icon =getBaseContext().getPackageManager().getApplicationIcon(
res.activityInfo.applicationInfo);
co.appIntent = new Intent(intent);
co.appIntent.setComponent(new ComponentName(
res.activityInfo.packageName,
res.activityInfo.name));
cropOptions.add(co);
}
CropOptionAdapter adapter = new CropOptionAdapter(getBaseContext().getApplicationContext(), cropOptions);
AlertDialog.Builder builder = new AlertDialog.Builder(getBaseContext());
builder.setTitle("Choose Crop App");
builder.setAdapter(adapter,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
startActivityForResult(
cropOptions.get(item).appIntent,
CROP_FROM_CAMERA);
}
});
builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
if (mImageCaptureUri != null) {getBaseContext().getContentResolver().delete(mImageCaptureUri, null,
null);
mImageCaptureUri = null;
}
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
}
CropOptionAdapter：
public class CropOptionAdapter extends ArrayAdapter<CropOption> {
private ArrayList<CropOption> mOptions;
private LayoutInflater mInflater;
public CropOptionAdapter(Context context, ArrayList<CropOption> options){
super(context, R.layout.crop_selector);
mOptions = options;
mInflater = LayoutInflater.from(context);
}
@Override
public View getView(int position, View convertView, ViewGroup group) {
if(convertView==null)
convertView = mInflater.inflate(R.layout.crop_selector, null);
CropOption item = mOptions.get(position);
if(item != null){
((ImageView) convertView.findViewById(R.id.iv_icon))
.setImageDrawable(item.icon);
((TextView) convertView.findViewById(R.id.tv_name))
.setText(item.title);
return convertView;
}
return null;
}
}
class CropOption {
public CharSequence title;
public Drawable icon;
public Intent appIntent;
}
cropselector.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp">
<ImageView
android:id="@+id/iv_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""/>
</LinearLayout>
并提供图像裁剪选项，