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

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233

tag should specify a target API level Warning | uses-sdk-tag-should-specify-target-api


Warning in AndroidManifest.xml:
tag should specify a target API level (the highest verified version; when running on
later versions, compatibility behaviors may be enabled) with android:targetSdkVersion="?"

Solution:

    <uses-sdk android:minSdkVersion="4"
         android:targetSdkVersion="16" />
21

How to install mount SD card for Eclipse Android Emulator | how-install-sd-card-on-android-eclipse-emulator


If you want download some *.apk file from internet and try on your emulator you get error than you have to install SD card. You have to closing Android emulator.
Mount Android emulator SD card instruction

  1. In Eclipse go in menu Window - Android SDK and Avg Manager

  2. Select Virtual devices

  3. Select AVD Name where you need install SD card

  4. Click on Edit button

  5. In open dialog go to SD card - Size: and write 500

  6. Press button Edit AVD

  7. Run AVD emulator


Image how install SD card on Android emulator in Eclipse.