I'm currently programmatically adding RelativeLayout encapsulated in a Linearlayout. The base is a scrollview and i'm trying to add those layouts into scrollview named svbase
LinearLayout llbase = new LinearLayout(getApplicationContext());
LinearLayout.LayoutParams llbaseParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); // Verbose!
llbaseParams.setMargins(0, new CommonOpearation().getPixel(10, getApplicationContext()), 0, new CommonOpearation().getPixel(10, getApplicationContext()));
llbase.setLayoutParams(llbaseParams);
llbase.setGravity(Gravity.CENTER_HORIZONTAL);
for(int n =0;n<2;n++)
{
RelativeLayout rLayoutBase = new RelativeLayout(getApplicationContext());
RelativeLayout.LayoutParams rLayoutParms = new RelativeLayout.LayoutParams( new CommonOpearation().getPixel(140, getApplicationContext()), new CommonOpearation().getPixel(125, getApplicationContext()));
**rLayoutParms.setMargins(0, 0, new CommonOpearation().getPixel(5, getApplicationContext()), 0);**
rLayoutBase.setLayoutParams(rLayoutParms);
Drawable drawable = MyCurrentActivity.this.getApplicationContext().getResources().getDrawable(R.drawable.curved_bg); //new Image that was added to the res folder
try {
rLayoutBase.getClass().getMethod(android.os.Build.VERSION.SDK_INT >= 16 ? "setBackground" : "setBackgroundDrawable", Drawable.class).invoke(rLayoutBase, drawable);
} catch (Exception ex) {
}
llbase.addView(rLayoutBase);
}
svBase.addView(llbase);
As you can see I have two relativelayout encapsulated in the linearlayout with a horizontal orientation. I've tried giving margin to each of the relativelayout using setMargin with a right of certain 5dp. However it does not gives margin inbetween the two relativelayout. It worked if I were to do in manually in xml though.
The differences can be seen at the image. the top is a xml specify layout while the bottom two relativelayout are generated programmatically
solved my own.
The solution is already out there! did not google enough! my fault!
Relative Layout ignoring setMargin()
Related
I'm confused, this should be centering, yet it's not.
public void addTableImage(String imageName, LinearLayout L){
ImageView newImage = new ImageView(c);
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(150, 150);
newImage.setLayoutParams(layoutParams);
int id = c.getResources().getIdentifier(imageName, "drawable", c.getPackageName());
RelativeLayout l1 = new RelativeLayout(c);
l1.setLayoutParams(new RelativeLayout.LayoutParams(400, 160));
l1.setBackgroundColor(Color.WHITE);
l1.setGravity(Gravity.CENTER);
newImage.setImageResource(id);
l1.addView(newImage);
L.addView(l1);
}
And I'm getting this as a result:
Image shows up fine (yes, it's just a placeholder green box), the background is set, and everything is set to be Gravity.CENTER, yet it's still left oriented.
Bonus points: Anyone know why "Ask a Question" now autocompletes your last question's info? It's a bit confusing, making me think I'm actually editing an old question.
Change your code to:
public void addTableImage(String imageName, LinearLayout L){
ImageView newImage = new ImageView(c);
RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(150, 150);
newImage.setLayoutParams(layoutParams);
int id = c.getResources().getIdentifier(imageName, "drawable", c.getPackageName());
RelativeLayout l1 = new RelativeLayout(c);
LinearLayout.LayoutParams lp=new LinearLayout.LayoutParams(400, 160);
lp.gravity=Gravity.CENTER;
l1.setLayoutParams(lp);
l1.setBackgroundColor(Color.WHITE);
l1.setGravity(Gravity.CENTER);
newImage.setImageResource(id);
l1.addView(newImage);
L.addView(l1);
}
Your image is centered inside relativelayout by setting gravity of relative layout to center.
But to set relative layout itself to the center of the Linearlayout it is in you need to set layout gravity to center of relative layout to center or gravity of the LinearLayout to center.
You can try above code it should work.
I want to add one imageView, TextView in a Relative Layout with background image through programmatically.I spedified height and width for the relative layout but it is not fitting to the specified width and height. where am going wrong ploesae help
Thanks in advance
here is my Code:
RelativeLayout.LayoutParams lp_topheader = new RelativeLayout.LayoutParams(800,45);
relative_topheader = new RelativeLayout(this);
relative_topheader.setLayoutParams(lp_topheader);
relative_topheader.setId(1);
Resources resources_topheader = getResources();
Drawable drawable_topheader = resources_topheader.getDrawable(R.drawable.headerbar_m);
relative_topheader.setBackgroundDrawable(drawable_topheader);
setContentView(relative_topheader);
RelativeLayout.LayoutParams lp_banner = new RelativeLayout.LayoutParams(385, 206);
relative_banner = new RelativeLayout(this);
relative_banner.setId(2);
relative_banner.setLayoutParams(lp_banner);
lp_banner.setMargins(40, 40, 0, 0);
lp_banner.addRule(RelativeLayout.BELOW,1);
ImageView iv = new ImageView(this);
iv.setScaleType(ScaleType.FIT_XY);
iv.setLayoutParams(lp_banner);
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.banner_image);
iv.setImageBitmap(bitmap);
setContentView(iv, lp_banner);
The root view (that is, the view that you set as the content view) always fill the entire area of the window. If you want it to take only a certain part, add it to another Layout that will take the entire window.
Try this instead of the last line:
LinearLayout ll = new LinearLayout(this);
ll.addView(iv, lp_banner);
setContentView(ll);
I'm a newbie to Android development, and I'm very much still learning Java too so be gentle!
I am creating an app that can take information about a task (I'm basing it around a sort of homework planner), store that info and then display it in a list. The program must be able to dynamically generate the list from the background files. I have managed all of this so far, but when I create a basic output for each task, containing the "subject" and "details" variables using a LinearLayout they appear on the screen overlapping. They all seem to be creating correctly, but they are all being put in the same place. Are there attributes I can set to make them display in a vertical list???
Here is the piece of code where I generate the viewgroups and display them. This is called from a loop in another part of the program which finds the number of files in internal storage.
TextView subjView;
TextView detailView;
RelativeLayout displayLayout;
LinearLayout taskDisplay = new LinearLayout(this);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
subjView = new TextView(this);
detailView = new TextView(this);
displayLayout = (RelativeLayout) findViewById(R.id.relative_display_layout);
subjView.setText(subject);
detailView.setText(details);
layoutParams.setMargins(0, 0, 0, 0);
taskDisplay.addView(subjView, layoutParams);
layoutParams.setMargins(10, 0, 0, 0);
taskDisplay.addView(detailView, layoutParams);
displayLayout.addView(taskDisplay);
If I understand correctly, I think your issue is only that you are declaring and then changing the layoutParams margins which sets them both to the same, which is overlapping your TextViews.
Edit
Okay, I am still not 100% sure how you are doing all of this so my example may need to be tweaked. I tried to throw this together quickly so forgive me for any minor mistakes.
New mock up for dynamic layouts:
TextView subjView, detailView;
RelativeLayout displayLayout, rl;
// I am assuming this is your main layout
displayLayout = (RelativeLayout) findViewById(R.id.relative_display_layout);
// Just using a for loop as an example of a loop event, not sure how you are accomplishing this
for(int i = 0; i < data.length(); i++) {
RelativeLayout.LayoutParams rllp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, 100);
if (i > 0) {
int rePositionRule = i;
rllp.addRule(RelativeLayout.BELOW, rePositionRule);
}
RelativeLayout taskDisplay = new RelativeLayout(this);
taskDisplay.setLayoutParams(rllp);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(0, 0, 0, 0);
LinearLayout.LayoutParams layoutParams2 = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
layoutParams2.setMargins(10, 0, 0, 0);
subjView = new TextView(this);
detailView = new TextView(this);
subjView.setText(subject);
subjView.setLayoutParams(layoutParams);
detailView.setText(details);
detailView.setLayoutParams(layoutParams2);
taskDisplay.addView(subjView);
taskDisplay.addView(detailView);
displayLayout.addView(taskDisplay);
}
Your displayLayout is a relativeLayout.. A relative layout, as the name implies, places element relative to each other. Normally you'd say "element A should go below element B" etc. Since you aren't providing any of these rules for the items you are creating they are just going to all go to the default position in a relative layout (which is the top of the screen.. hence the overlap)
If you don't want to deal with the hassle of changing your code to place things relatively simply switch your displayLayout to a LinearLayout in your xml and code and set its orientation to vertical. You'll probably want to wrap that in a scroll view if it runs off the screen
However, it sounds like what you really want is a ListView...
In OnCreate:
svMaster = (ScrollView) findViewById(R.id.scroller); //Only layout in XML file
svMaster.setVerticalFadingEdgeEnabled(false);
Display display = ((WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
height = display.getHeight();
...
initializeGUI();
svMaster.removeAllViews();
svMaster.addView(llMaster);
In initializeGUI():
llMaster = new LinearLayout(this); //Only direct child of scrollview
LinearLayout llFirstScreen = new LinearLayout(this); //First layout added to llMaster;
//It's size is that of one screen
LinearLayout.LayoutParams lpMaster = new LinearLayout.LayoutParams
(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
LinearLayout.LayoutParams lpFirstScreen = new LinearLayout.LayoutParams
(LayoutParams.MATCH_PARENT, height);
llMaster.setLayoutParams(lpMaster);
llMaster.setOrientation(LinearLayout.VERTICAL);
llFirstScreen.setLayoutParams(lpFirstScreen);
llFirstScreen.setBackgroundResource(R.color.blue2);
llFirstScreen.setOrientation(LinearLayout.VERTICAL);
Here's my code pertaining to the ImageView:
ImageView ivWeather = new ImageView(this);
LinearLayout.LayoutParams ivWeatherParams = new LinearLayout.LayoutParams
(Scale(80), Scale(80);
ivWeather.setImageResource(R.drawable.sunny);
Log.d("ImageView loading?", "I hope so");
ivWeather.setScaleType(ScaleType.FIT_XY);
ivWeather.setLayoutParams(ivWeatherParams);
ivWeather.setVisibility(View.VISIBLE); //This is code I tried
ivWeather.setFocusable(true); //when it wouldn't show up
ivWeather.setFocusableInTouchMode(true); //...
ivWeather.invalidate(); //...
...
llFirstScreen.addView(ivWeather);
Log.d("ImageView loading?", "I hope so");
llMaster.addView(llFirstScreen);
...
I have added TextViews with no problem to llFirstScreen, and I am wondering why ImageView
won't show up. I tried even adjusting llFirstScreen's height to WRAP_CONTENT instead of the screen's height. All that did was shrink the layout to the two TextViews. It's as if it never added the ImageView. The Logs I put in check out, so I know the code is running.
Am I missing anything?
Have you tried changing your LinearLayout.LayoutParams from Scale(80), Scale(80) to something like LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT or something? I've never seen Scale(int) used. If that is a custom method can you post it?
So I'm trying to add an imageview to my current xml design - and its working decently. Now my main problem is that I cant seem to find a way to set the attributes for the image like where it needs to be displayed etc.
RelativeLayout mRelativeLayout = (RelativeLayout) findViewById(R.id.board);
ImageView i = new ImageView(this);
i.setImageResource(R.drawable.blue_1);
i.setAdjustViewBounds(true);
mRelativeLayout.addView(i);
setContentView(mRelativeLayout);
I tried messing around with setlayoutparams but got absolutely no clue what to do with it.
You actually have to use the class LayoutParams to do that efficiently and easily :
RelativeLayout mRelativeLayout = (RelativeLayout) findViewById(R.id.board);
ImageView i = new ImageView(this);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(40, 40);
params.leftMargin = 25;
params.topMargin = 25;
i.setImageResource(R.drawable.icon);
i.setAdjustViewBounds(true);
mRelativeLayout.addView(i, params);
This works for me and put my icon in the top left corner of the screen with the specified margin to the sides of the screen.
Does that help?