【发布时间】：2011-09-19 04:06:23
【问题描述】：
我正在使用相机 API 并调用相机。
我想在相机预览的顶部显示一个标题（用于品牌宣传）。标题是 jpeg 图像。
有可能吗？任何帮助表示赞赏。
提前致谢。
我的代码如下。
public class CameraActivity extends Activity {
@Override
protected void onPause() {
super.onPause();
}
private static final int CAMERA_PIC_REQUEST = 2500;
private Bitmap image2;
private Bitmap bm;
public static String imagepath;
public static int x=1;
private RdmsDbAdapter dbHelper;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.header);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
//caling new incident
if(IncidentFormActivity.incident_id == null || IncidentFormActivity.isDisable==true){
//DBAdapter instance created and connection opened.
dbHelper = new RdmsDbAdapter(CameraActivity.this);
dbHelper.open();
//setting up flags
NewIncidentHelper nih = new NewIncidentHelper();
nih.setUpNewIncident();
//setting up incident_id
String Date= IncidentIdGenerator.getDate();
String Time = IncidentIdGenerator.getTime();
IncidentFormActivity.incident_id = IncidentIdGenerator.now("ddMMyyyyHHmmss");
dbHelper.executeSQL("insert into incident values ('" + IncidentFormActivity.incident_id
+ "', ' ', ' ', ' ', ' ', '"+Date+"', '0','0','0','0','0','0','0','0','0','"+Time+"')");
dbHelper.close();
}
//calling camera
Intent cameraIntent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
//back key on phone pressed
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
Intent i= new Intent(CameraActivity.this, IncidentFormActivity.class);
startActivity(i);
this.finish();
break;
default:
break;
}
return super.onKeyDown(keyCode, event);
}
//handle response came from camera when the picture is taken.
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_PIC_REQUEST && resultCode == RESULT_OK) {
final ImageView img = new ImageView(this);
img.setLayoutParams(new LayoutParams(100, 100));
image2 = (Bitmap) data.getExtras().get("data");
img.setImageBitmap(image2);
String incident_ID = IncidentFormActivity.incident_id;
//l2.addView(img);
imagepath="/sdcard/RDMS/"+incident_ID+ x + ".png";
File file = new File(imagepath);
try {
bm = Bitmap.createScaledBitmap( image2,400, 300, true);
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
bm.compress(CompressFormat.PNG, 90, ostream);
ostream.close();
//Initialising db class and inserting values
dbHelper = new RdmsDbAdapter(CameraActivity.this);
dbHelper.open();
dbHelper.executeSQL("insert into files values ('"+imagepath+"', '"+IncidentFormActivity.incident_id+"')");
dbHelper.close();
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),"yourfirst error message is "
+ e.toString(), 1000).show();
}
x++;
final AlertDialog.Builder alert = new AlertDialog.Builder(
CameraActivity.this);
alert.setTitle(getString(R.string.anotherimage));
alert.setCancelable(false);
//alert.setMessage("Play or Delete the Video selected");
//alert.setIcon(R.drawable.vid_red);
alert.setPositiveButton(getString(R.string.yes), new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent sendingpage = new Intent(CameraActivity.this, CameraActivity.class);
startActivity(sendingpage);
}
});
alert.setNegativeButton(getString(R.string.no),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent callback = new Intent (CameraActivity.this, IncidentFormActivity.class);
startActivity(callback);
}
});
alert.show();
}
if(resultCode==RESULT_CANCELED)
{
AlertDialog.Builder builder = new AlertDialog.Builder(CameraActivity.this);
builder.setMessage(getString(R.string.areuexit)).setCancelable(
false).setPositiveButton(getString(R.string.yes),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent i= new Intent(CameraActivity.this, IncidentFormActivity.class);
startActivity(i);
CameraActivity.this.finish();
}
}).setNegativeButton(getString(R.string.no),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
Intent i= new Intent(CameraActivity.this, CameraActivity.class); startActivity(i);
CameraActivity.this.finish();
}
});
builder.show();
}
}
}
【问题讨论】：
-
通过标题，您是指相机应用顶部的图形还是某种类似水印的图形？
-
是的，我想在顶部显示一个图形作为标题。谢谢。
-
是的，我想在顶部显示一个图形作为相机预览顶部的标题。没什么，我什至不想改变拍摄的图像。谢谢。
-
很好的关注点分离