MediaPlayer overview | Android Developers
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How to fix 'Unfortunately app has stopped' errors | AndroidPIT
How to Force Close an App on an Android Phone - dummies Sometimes, apps on your Android phone misbehave and let you know. You see a warning on the screen announcing the app’s stubborn disposition. Touch the Force Close button to shut down the errant app. When you see no warning or an app appears to be unduly … How to Stop Apps from Running at Startup on Android
Add android:screenOrientation="portrait" to the activity in the AndroidManifest.xml. For example:
EDIT: Since this has become a super-popular answer, I feel very guilty as forcing portrait is rarely the right solution to the problems it's frequently applied to.
Android Accessibility. TalkBack. Turn off TalkBack. Turn off TalkBack. Option 1: Press both volume keys. If your device has the accessibility shortcut turned on, simply press both volume keys for 3 seconds. If you try this option and it doesn't work, follow the steps to turn on the accessibility shortcut.