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How to make a horizontal line in Android application example code


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In html is horizontal line a tag br. In Android source code you can use a View as xml example bellow.

<View
android:layout_width="fill_parent"
android:layout_height="4dip"
android:background="#ffffff"
android:paddingBottom="10dip"
/>

397LW NO topic_id




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Další témata ....(Topics)


296

On orientation changed view button textview not visible Android | on-orientation-changed-view-button-textview-not-visible-android


Try add to AndroidManifest.xml configChanges for your Activity
android:configChanges="keyboardHidden|orientation|screenSize"


 <activity android:name=".MainActivity"
                  android:label="@string/app_name"
                  android:configChanges="keyboardHidden|orientation|screenSize"
                  >
365

layout-sw600dp values-sw600dp Android example of use | layout-sw600dp-values-sw600dp-android-example-of-use


Why the app selects data from basic layout folder if smallest width is higher then the number in folder name?
Example 1
layout-sw600dp values-sw600dp (smallest width sw for data usage from this folder is 600dp density independent pixel!!!!!)
Device screen resolution is 1200 x 900 px (pixel) Wow, app to be select data from sw600dp folder! Realy?
DPI of device screen - dot per inch (pixel per inch) is 480 pixel it is wery important number!


  1. App selects smallest dimension of screen. In our case 900 px
    Medium screen have 160 dpi (The density-independent pixel is equivalent to one physical pixel on a 160 dpi screen, which is the baseline density assumed by the system for a "medium" density screen.).


  2. App calculate ratio 480 / 160 = 3 (The conversion of dp units to screen pixels: px = dp * (dpi / 160))


  3. App calculate smallest dimesnion of screen in dp 900 / 3 = 300 dip or dp (density independed pixel).


  4. App selects data from basic values and layout folder because sw600dp is greater than 300dp.





In our case smallest dimension of screen must be at least 1800 real - physical pixels (1800 px / 3 ratio(dpi/160) = 600 dp (dip density independend pixels) to be used data from folders values-sw600dp and layout-sw600dp.


Example 2 see Example 1 abouve
Device: Nexus 7 (2012) selected from Android Studio tool layout editor
Resolution: 800x1280 px
DPI: tvdpi (approximately 213dpi)
Ratio: 1.33 (213 / 160)
Smallest width in px: 800
Convert px to dp: 601.5 (800 / 1.33)
Result:Smallest width is 601.5dp The App to be used data from folders values-sw600dp and layout-sw600dp.
346

Android Studio lock unlock file make read only or writable | android-studio-lock-unlock-file-make-read-only-or-writable


Select file in project explorer
Menu:
File - Make File Read-only - to lock
File - Make File Writable - to unlock

android-studio-lock-unlock-file.png
195

Nokia Lumia 900 - Windows Phone 7 | nokia-lumia-900-windows-phone-7


Hmotnost 160 g
Procesor 1.4 GHz Qualcomm Scorpion
Displej 800 x 480, 4.3 in. ClearBlack AMOLED capacitive touchscreen, 16m-color WVGA, Corning® Gorilla® Glass (odolný povrch)
Velikost displeje v palcích 4,3
Rozměry 128 x 68 x 11,5
Fotoaparát 8 Mpix, 3264x2448 pixelů, dual-LED flash, autofocus Carl Zeiss optika, 720p video capture
HD video, natačení videosekvencí, editace fotografií, přední kamera
Operační system Windows Phone 7
Datové funkce GPS modul, WiFi, Bluetooth, NFC, GPRS, EDGE, HSCSD
Přední kamera 1 Megapixel, 1280x720 pixelů
Připojení Bluetooth 2.1, 802.11b/g/n, dual mode A-GPS/GLONASS, micro-USB, 3.5mm audio jack, FM radio


Výhody svižný operační systém, editace MS Office dokumentů, napojení na cloudové uložiště SkyDrive (25GB prostoru zdarma), integrace sociálních sítí

Nevýhody v porovnání s Androidem méně aplikaci ke stažení zdarma
395

Download file from root Android device Windows | download-file-from-root-android-device-windows


Download file from Android device using Android Studio

stackoverflow.com/questions/34603355/android-device-monitor-data-folder-is-empty

C:\Users\user>c:\Users\user\AppData\Local\Android\sdk\platform-tools\adb shell (press Enter)
shell@Kraft-A6000:/ $ 
shell@Kraft-A6000:/ $ su (Enter)
root@Kraft-A6000:/ #
root@Kraft-A6000:/ # su -c "chmod 777 /data" (Enter)
root@Kraft-A6000:/ # su -c "chmod 777 /data/data" (Enter)
root@Kraft-A6000:/ # su -c "chmod 777 /data/data/com.your_package" (Enter)
root@Kraft-A6000:/ # su -c "chmod 777 /data/data/com.your_package/databases" (Enter)
root@Kraft-A6000:/ # su -c "chmod 777 /data/data/com.your_package/databases/database_name.db" (Enter)


  • Open Android Studio -> Tools -> Android -> Android Device Monitor (meybe some message box, minimalize all windows to find message box - close message box )
  • Pull data from Explorer

Date: 13.07.2020 - 08:23


Editace: 2011-10-15 15:39:10
Počet článků v kategorii: 397
Url:how-to-make-a-horizontal-line-in-android-application-example-code

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