The exact physical pixels per inch of the screen
Get size of pixel
Get DPI
Get count of pixels per inch
float mXDpi; float mYDpi; DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics); mXDpi = metrics.xdpi; // The exact physical pixels per inch of the screen in the X dimension. mYDpi = metrics.ydpi; float mMetersToPixelsX = mXDpi / 0.0254f; // 1 inch == 0.0254 metre float mMetersToPixelsY = mYDpi / 0.0254f;
Invalid proguard configuration file path
C:\documents\my_android_projects\my_project\proguard.cfg does not exist or is not a regular file
Solution:
Check if exist file proguard.cfg in your project on the path C:\docum………
If not exist, copy a file proguard.cfg from other project or create file proguard.cfg and insert
this source code to file and save this file.
-optimizationpasses 5 -dontusemixedcaseclassnames -dontskipnonpubliclibraryclasses -dontpreverify -verbose -optimizations !code/simplification/arithmetic,!field/*,!class/merging/* -keep public class * extends android.app.Activity -keep public class * extends android.app.Application -keep public class * extends android.app.Service -keep public class * extends android.content.BroadcastReceiver -keep public class * extends android.content.ContentProvider -keep public class * extends android.app.backup.BackupAgentHelper -keep public class * extends android.preference.Preference -keep public class com.android.vending.licensing.ILicensingService -keepclasseswithmembernames class * { native <methods>; } -keepclasseswithmembers class * { public <init>(android.content.Context, android.util.AttributeSet); } -keepclasseswithmembers class * { public <init>(android.content.Context, android.util.AttributeSet, int); } -keepclassmembers class * extends android.app.Activity { public void *(android.view.View); } -keepclassmembers enum * { public static **[] values(); public static ** valueOf(java.lang.String); } -keep class * implements android.os.Parcelable { public static final android.os.Parcelable$Creator *; }
From more details see:
http://developer.android.com/guide/developing/tools/proguard.html
A web browser for Wikipedia.
The browser for OS Android 2.1 and higher.
Features:
-back button
-history
-forward button
-save the page as favorite
-open favorite
-page up
-page down
-online dictionary for 65 languages
Code with error:
ImageView imgV = (ImageView)findViewById(R.id.myView); imgV.setLayoutParams(new ViewGroup.LayoutParams( ViewGroup.LayoutParams.WRAP_CONTENT, 0));
If you get error try this code:
ViewGroup.LayoutParams layoutParams = imgV .getLayoutParams(); layoutParams.height = 0; imgV.setLayoutParams(layoutParams);
java.lang.ClassCastException: android.view.ViewGroup$LayoutParams
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:659)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:311)
at android.view.View.measure(View.java:8313)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:386)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
at android.view.View.measure(View.java:8313)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8313)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:531)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
at android.view.View.measure(View.java:8313)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8313)
Eclipse update ADT 17 Android Emulator error: E/AndroidRuntime(370): java.lang.NoClassDefFoundError: com.google.ads.AdView
Solution:
-right click on the project in project tree and select Project properties
-select Java Build Path
-select TAB Order and Export
-check GoogleAdMobAdsSdk-4.0.4.jar (or your version SDK)
-press OK
-clean project by menu Project -> Clean
-rebuild project (Project – Build Automatically)
How add GoogleAdMobAdsSdk….jar to project:
-right click on the project in project tree and select Project properties
-select Java Build Path
-select TAB Libraries
-press the button Add External JARs…
-select your version GoogleAdMobAdsSdkXXX.jar what you can using
-OK
-OK
-clean project
-rebuild project
Could not open the editor: Resource is out of sync with the file system: ‘/my_project/project.properties’.
If you get this message close file, select file in the folder tree and press F5 on file in the Eclipse folder tree. Reopen this file.
Download free calculator to calculate volume, surface, area and mass of the Sphere, Circle, Cylinder, Cone, Cube and off-line geometry formulas.
// start_dark.png is stored in path /package_name/res/drawable/start_dark.png Drawable dw = getApplicationContext().getResources().getDrawable(R.drawable.start_dark); Button hButtonStart = (Button)findViewById(R.id.buttonStart); hButtonStart.setCompoundDrawablesWithIntrinsicBounds(dw, null, null, null);
ImputStream is = this.getResources().openRawResource(R.drawable.colors); Bitmap mBitmap2 = BitmapFactory.decodeStream(is); int w = mBitmap2.getWidth(); int h = mBitmap2.getHeight(); // int x , y have to be smaller as w , h int _color = mBitmap2.getPixel(x, y);
android:background=”@android:color/transparent”
<LinearLayout android:baselineAligned="false" android:background="@android:color/transparent" android:id="@+id/linearLayout1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <LinearLayout> //////////////////////////// LinearLayout mLinearLayout1 = (LinearLayout)findViewById(R.id.linearLayout1); mLinearLayout1.setBackgroundColor(Color.TRANSPARENT);
