2014/10/16 上午 08:27:23

android Programming Glossary: viewtreeobserver

Android - How to make slide menu like facebook, spotify and Google +

http://stackoverflow.com/questions/11465774/android-how-to-make-slide-menu-like-facebook-spotify-and-google

import android.view.View import android.view.ViewTreeObserver import android.view.View.OnClickListener import android.view.ViewTreeObserver.OnGlobalLayoutListener.. android.view.View.OnClickListener import android.view.ViewTreeObserver.OnGlobalLayoutListener import android.widget.Button import android.widget.RelativeLayout.. height of your layout in onCreate it will return 0 final ViewTreeObserver filterObserver filterLayout.getViewTreeObserver filterObserver.addOnGlobalLayoutListener..

How to animate a slide in notification view that pushes the content view down

http://stackoverflow.com/questions/19098083/how-to-animate-a-slide-in-notification-view-that-pushes-the-content-view-down

layout LinearLayout findViewById R.id.parentLayout final ViewTreeObserver vto layout.getViewTreeObserver vto.addOnGlobalLayoutListener.. R.id.parentLayout final ViewTreeObserver vto layout.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override.. onGlobalLayout if Build.VERSION.SDK_INT 16 layout.getViewTreeObserver .removeGlobalOnLayoutListener this else layout.getViewTreeObserver..

How to check visibility of software keyboard in Android?

http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android

the below answer someone clued me in to the existence of ViewTreeObserver and friends APIs which have been lurking in the SDK since version.. '@ id activityRoot' hook a GlobalLayoutListener into the ViewTreeObserver and from there calculate the size diff between your activity's.. findViewById R.id.activityRoot activityRootView.getViewTreeObserver .addOnGlobalLayoutListener new OnGlobalLayoutListener @Override..

Html List tag not working in android textview. what can i do?

http://stackoverflow.com/questions/3150400/html-list-tag-not-working-in-android-textview-what-can-i-do

Determining the size of an Android view at runtime

http://stackoverflow.com/questions/3779173/determining-the-size-of-an-android-view-at-runtime

runtime android share improve this question Use the ViewTreeObserver on the View to wait for the first layout. Only after the first.. getHeight getMeasuredWidth getMeasuredHeight work. ViewTreeObserver viewTreeObserver view.getViewTreeObserver if viewTreeObserver.isAlive.. work. ViewTreeObserver viewTreeObserver view.getViewTreeObserver if viewTreeObserver.isAlive viewTreeObserver.addOnGlobalLayoutListener..

How do you to retrieve dimensions of a view? Getheight() and Getwidth() always return zero

http://stackoverflow.com/questions/4142090/how-do-you-to-retrieve-dimensions-of-a-view-getheight-and-getwidth-always-r

final TextView tv TextView findViewById R.id.image_test ViewTreeObserver vto tv.getViewTreeObserver vto.addOnGlobalLayoutListener new.. findViewById R.id.image_test ViewTreeObserver vto tv.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override.. tv.getBackground ld.setLayerInset 1 0 tv.getHeight 2 0 0 ViewTreeObserver obs tv.getViewTreeObserver if Build.VERSION.SDK_INT Build.VERSION_CODES.JELLY_BEAN..

Multi-gradient shapes

http://stackoverflow.com/questions/4381033/multi-gradient-shapes

When Can I First Measure a View?

http://stackoverflow.com/questions/4393612/when-can-i-first-measure-a-view

share improve this question I didn't knew about ViewTreeObserver.addOnPreDrawListener and I tried it in a test project. With.. LayerDrawable ld LayerDrawable tv.getBackground final ViewTreeObserver obs mTv.getViewTreeObserver obs.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener.. tv.getBackground final ViewTreeObserver obs mTv.getViewTreeObserver obs.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener..

How to get the Dimensions of a Drawable in an ImageView?

http://stackoverflow.com/questions/4649438/how-to-get-the-dimensions-of-a-drawable-in-an-imageview

final TextView tv TextView findViewById R.id.size_label ViewTreeObserver vto iv.getViewTreeObserver vto.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener.. findViewById R.id.size_label ViewTreeObserver vto iv.getViewTreeObserver vto.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener.. vto iv.getViewTreeObserver vto.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener public boolean onPreDraw finalHeight iv.getMeasuredHeight..

android get height width of ImageView

http://stackoverflow.com/questions/4680499/android-get-height-width-of-imageview

Multiple screen resolution

http://stackoverflow.com/questions/7156752/multiple-screen-resolution

of setting width and height in terms of percentage final ViewTreeObserver mLayoutObserver mLayout.getViewTreeObserver mLayoutObserver.addOnGlobalLayoutListener.. final ViewTreeObserver mLayoutObserver mLayout.getViewTreeObserver mLayoutObserver.addOnGlobalLayoutListener new OnGlobalLayoutListener..

How can you tell when a layout has been drawn?

http://stackoverflow.com/questions/7733813/how-can-you-tell-when-a-layout-has-been-drawn

layout LinearLayout findViewById R.id.YOUD VIEW ID ViewTreeObserver vto layout.getViewTreeObserver vto.addOnGlobalLayoutListener.. R.id.YOUD VIEW ID ViewTreeObserver vto layout.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override.. @Override public void onGlobalLayout this.layout.getViewTreeObserver .removeGlobalOnLayoutListener this int width layout.getMeasuredWidth..

Android take screen shot programatically

http://stackoverflow.com/questions/7762643/android-take-screen-shot-programatically

R.layout.screenshot content findViewById R.id.screenRoot ViewTreeObserver vto content.getViewTreeObserver vto.addOnGlobalLayoutListener.. R.id.screenRoot ViewTreeObserver vto content.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override.. @Override public void onGlobalLayout content.getViewTreeObserver .removeGlobalOnLayoutListener this getScreen private void getScreen..

Android - How to make slide menu like facebook, spotify and Google +

http://stackoverflow.com/questions/11465774/android-how-to-make-slide-menu-like-facebook-spotify-and-google

import android.os.Bundle import android.util.DisplayMetrics import android.view.View import android.view.ViewTreeObserver import android.view.View.OnClickListener import android.view.ViewTreeObserver.OnGlobalLayoutListener import android.widget.Button.. android.view.View import android.view.ViewTreeObserver import android.view.View.OnClickListener import android.view.ViewTreeObserver.OnGlobalLayoutListener import android.widget.Button import android.widget.RelativeLayout public class Find extends Activity.. with correct width height else if you simply try to get width height of your layout in onCreate it will return 0 final ViewTreeObserver filterObserver filterLayout.getViewTreeObserver filterObserver.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override..

How to animate a slide in notification view that pushes the content view down

http://stackoverflow.com/questions/19098083/how-to-animate-a-slide-in-notification-view-that-pushes-the-content-view-down

listView.setAdapter arrayAdapter final LinearLayout layout LinearLayout findViewById R.id.parentLayout final ViewTreeObserver vto layout.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout.. final LinearLayout layout LinearLayout findViewById R.id.parentLayout final ViewTreeObserver vto layout.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout if Build.VERSION.SDK_INT.. new OnGlobalLayoutListener @Override public void onGlobalLayout if Build.VERSION.SDK_INT 16 layout.getViewTreeObserver .removeGlobalOnLayoutListener this else layout.getViewTreeObserver .removeOnGlobalLayoutListener this greenHeight greenView.getHeight..

How to check visibility of software keyboard in Android?

http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android

this question NEW ANSWER added Jan 25th 2012 Since writing the below answer someone clued me in to the existence of ViewTreeObserver and friends APIs which have been lurking in the SDK since version 1. Rather than requiring a custom Layout type a much simpler.. solution is to give your activity's root view a known ID say '@ id activityRoot' hook a GlobalLayoutListener into the ViewTreeObserver and from there calculate the size diff between your activity's view root and the window size final View activityRootView.. view root and the window size final View activityRootView findViewById R.id.activityRoot activityRootView.getViewTreeObserver .addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout int heightDiff activityRootView.getRootView..

Html List tag not working in android textview. what can i do?

http://stackoverflow.com/questions/3150400/html-list-tag-not-working-in-android-textview-what-can-i-do

Determining the size of an Android view at runtime

http://stackoverflow.com/questions/3779173/determining-the-size-of-an-android-view-at-runtime

. How can I figure out the exact dimensions of this view at runtime android share improve this question Use the ViewTreeObserver on the View to wait for the first layout. Only after the first layout will getWidth getHeight getMeasuredWidth getMeasuredHeight.. for the first layout. Only after the first layout will getWidth getHeight getMeasuredWidth getMeasuredHeight work. ViewTreeObserver viewTreeObserver view.getViewTreeObserver if viewTreeObserver.isAlive viewTreeObserver.addOnGlobalLayoutListener new OnGlobalLayoutListener.. layout will getWidth getHeight getMeasuredWidth getMeasuredHeight work. ViewTreeObserver viewTreeObserver view.getViewTreeObserver if viewTreeObserver.isAlive viewTreeObserver.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void..

How do you to retrieve dimensions of a view? Getheight() and Getwidth() always return zero

http://stackoverflow.com/questions/4142090/how-do-you-to-retrieve-dimensions-of-a-view-getheight-and-getwidth-always-r

onCreate method EDITED 07 05 11 to include code from comments final TextView tv TextView findViewById R.id.image_test ViewTreeObserver vto tv.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout.. 05 11 to include code from comments final TextView tv TextView findViewById R.id.image_test ViewTreeObserver vto tv.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout LayerDrawable ld LayerDrawable.. public void onGlobalLayout LayerDrawable ld LayerDrawable tv.getBackground ld.setLayerInset 1 0 tv.getHeight 2 0 0 ViewTreeObserver obs tv.getViewTreeObserver if Build.VERSION.SDK_INT Build.VERSION_CODES.JELLY_BEAN obs.removeOnGlobalLayoutListener this..

Multi-gradient shapes

http://stackoverflow.com/questions/4381033/multi-gradient-shapes

be found here . This code should go in your onCreate method final TextView tv TextView findViewById R.id.image_test ViewTreeObserver vto tv.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout.. should go in your onCreate method final TextView tv TextView findViewById R.id.image_test ViewTreeObserver vto tv.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout LayerDrawable ld LayerDrawable..

When Can I First Measure a View?

http://stackoverflow.com/questions/4393612/when-can-i-first-measure-a-view

ld android layout height android lifecycle share improve this question I didn't knew about ViewTreeObserver.addOnPreDrawListener and I tried it in a test project. With your code it would look like this public void onCreate setContentView.. final TextView tv TextView findViewById R.id.image_test final LayerDrawable ld LayerDrawable tv.getBackground final ViewTreeObserver obs mTv.getViewTreeObserver obs.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener @Override public boolean onPreDraw.. findViewById R.id.image_test final LayerDrawable ld LayerDrawable tv.getBackground final ViewTreeObserver obs mTv.getViewTreeObserver obs.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener @Override public boolean onPreDraw Log.d TAG onPreDraw tv..

How to get the Dimensions of a Drawable in an ImageView?

http://stackoverflow.com/questions/4649438/how-to-get-the-dimensions-of-a-drawable-in-an-imageview

final ImageView iv ImageView findViewById R.id.scaled_image final TextView tv TextView findViewById R.id.size_label ViewTreeObserver vto iv.getViewTreeObserver vto.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener public boolean onPreDraw finalHeight.. findViewById R.id.scaled_image final TextView tv TextView findViewById R.id.size_label ViewTreeObserver vto iv.getViewTreeObserver vto.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener public boolean onPreDraw finalHeight iv.getMeasuredHeight.. tv TextView findViewById R.id.size_label ViewTreeObserver vto iv.getViewTreeObserver vto.addOnPreDrawListener new ViewTreeObserver.OnPreDrawListener public boolean onPreDraw finalHeight iv.getMeasuredHeight finalWidth iv.getMeasuredWidth tv.setText Height..

android get height width of ImageView

http://stackoverflow.com/questions/4680499/android-get-height-width-of-imageview

Multiple screen resolution

http://stackoverflow.com/questions/7156752/multiple-screen-resolution

width and height take value as pixels Here is an example code of setting width and height in terms of percentage final ViewTreeObserver mLayoutObserver mLayout.getViewTreeObserver mLayoutObserver.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override.. an example code of setting width and height in terms of percentage final ViewTreeObserver mLayoutObserver mLayout.getViewTreeObserver mLayoutObserver.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout DisplayMetrics..

How can you tell when a layout has been drawn?

http://stackoverflow.com/questions/7733813/how-can-you-tell-when-a-layout-has-been-drawn

the height and width. Put this on the onCreate method LinearLayout layout LinearLayout findViewById R.id.YOUD VIEW ID ViewTreeObserver vto layout.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout.. on the onCreate method LinearLayout layout LinearLayout findViewById R.id.YOUD VIEW ID ViewTreeObserver vto layout.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout this.layout.getViewTreeObserver.. vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout this.layout.getViewTreeObserver .removeGlobalOnLayoutListener this int width layout.getMeasuredWidth int height layout.getMeasuredHeight share improve..

Android take screen shot programatically

http://stackoverflow.com/questions/7762643/android-take-screen-shot-programatically

super.onCreate savedInstanceState setContentView R.layout.screenshot content findViewById R.id.screenRoot ViewTreeObserver vto content.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout.. setContentView R.layout.screenshot content findViewById R.id.screenRoot ViewTreeObserver vto content.getViewTreeObserver vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout content.getViewTreeObserver.. vto.addOnGlobalLayoutListener new OnGlobalLayoutListener @Override public void onGlobalLayout content.getViewTreeObserver .removeGlobalOnLayoutListener this getScreen private void getScreen View view content View v view.getRootView v.setDrawingCacheEnabled..