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Installation failed with message INSTALL_PARSE_FAILED_MANIFEST_MALFORMED. It is possible that this issue is resolved by uninstalling an existing version of the apk if it is present, and then re-installing. WARNING: Uninstalling will remove the application data! Do you want to uninstall the existing application? please help me

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Try to check these :

  1. Activity name should be prefixed with "." in your manifest file
  2. Check if you don't have a taskAffinity attribute without dot :

    android:taskAffinity=".string"

  3. Your package name use only lowercase

  4. This error can be cause by a lot of different mistake in your manifest.xml file. Check this file carrefuly...

Laurent
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