How to use Start Activity,Stop Activity and Suspend Activity
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Start Activity;Stop Activity and Suspend Activity are used to play music, stop music and pause playback, respectively.
Package mth.android
Import android.app.Activity
Import android.media.MediaPlayer
Import android.os.Bundle
Import android.view.View
Import android.widget.Button
Import android.widget.TextView
Public class AndroidActivity extends Activity implements View.OnClickListener {
/ / Define a media player
Private MediaPlayer mediaPlayer = null
Private int curPos = 0
/ * Called when the activity is first created. , /
@ Override
Public void onCreate (Bundle savedInstanceState) {
Super.onCreate (savedInstanceState)
SetContentView (R.layout.main)
/ / final View textDisplayer = this.findViewById (R.id.displayText)
/ / final TextView textDisplayer = (TextView) this.findViewById (R.id.displayText)
Button startActivityButton = (Button) this.findViewById (R.id.startAndroidActivity)
StartActivityButton.setOnClickListener (this)
Button stopActivityButton = (Button) this.findViewById (R.id.stopAndroidActivity)
StopActivityButton.setOnClickListener (this)
Button suspendActivityButton = (Button) this.findViewById (R.id.suspendAndroidActivity)
SuspendActivityButton.setOnClickListener (this)
/ *
Button startActivityButton = (Button) this.findViewById (R.id.startAndroidActivity)
StartActivityButton.setOnClickListener (new OnClickListener () {
Public void onClick (View v) {
/ / TODO Auto-generated method stub
Display (textDisplayer)
}
});
, /
/ *
View startActivityButton = this.findViewById (R.id.startAndroidActivity)
StartActivityButton.setOnClickListener (new View.OnClickListener () {
Public void onClick (View v) {
/ / TODO Auto-generated method stub
TextDisplayer.setText ("Hello World")
TextDisplayer.setBackgroundColor (0xFFFFFFFF)
}
}
);
, /
/ *
TextView text = new TextView (this)
Text.setText ("Hello World")
SetContentView (text)
, /
}
Public void display (TextView tv)
{
Tv.setText ("Hello world")
Tv.setBackgroundColor (0xFFFFFF00)
}
Public void onClick (View v) {
/ / int curPos = 0
Switch (v.getId ())
{
Case R.id.startAndroidActivity:
/ / TODO Auto-generated method stub
Final TextView textDisplayer = (TextView) this.findViewById (R.id.displayText)
TextDisplayer.setText ("Hello world")
TextDisplayer.setBackgroundColor (BIND_AUTO_CREATE)
/ / Start media player
MediaPlayer = MediaPlayer.create (this, R.raw.just_one_last_dance)
MediaPlayer.seekTo (0)
MediaPlayer.start ()
Break
Case R.id.stopAndroidActivity:
MediaPlayer.stop ()
Break
Case R.id.suspendAndroidActivity:
If (true = = mediaPlayer.isPlaying ())
{
CurPos = mediaPlayer.getCurrentPosition ()
MediaPlayer.pause ()
}
Else
{
MediaPlayer.seekTo (curPos)
MediaPlayer.start ()
}
Break
Default:
Break
}
}
}
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