如何将 TextView Text 设置为动态滚动选框。请帮助我，谢谢提前。
用于获取要在音频播放器中播放的列表项的列表视图如下所示。
public class Audiovediolist extends Activity implements OnItemClickListener {
private ListView audioList;
private Intent frmHome;
private ArrayList<HashMap<String, String>> dataList;
private HashMap<String, String> map;
private HashMap<String, String> data;
private int Screen_Id;
String name;
String mSign[] ={"1","2","3","4","5"};
Integer mImages[] = { R.drawable.m, R.drawable.v,
R.drawable.mm, R.drawable.k, R.drawable.s};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_RIGHT_ICON);
setContentView(R.layout.list);
frmHome = getIntent();
getIntentValues();
initUI();
setUI();
uiListener();
}
private void initUI() {
audioList = (ListView) findViewById(R.id.audiolist_listView);
dataList = new ArrayList<HashMap<String, String>>();
}
private void uiListener() {
audioList.setOnItemClickListener(this);
}
private void getIntentValues() {
String id = frmHome.getStringExtra("Activity_Id");
Screen_Id = Integer.parseInt(id);
if (Screen_Id == 1) {
getWindow().setFeatureDrawableResource(Window.FEATURE_RIGHT_ICON,
R.drawable.audioo);
this.setTitle(getResources().getString(R.string.audio));
this.setTitleColor(getResources().getColor(R.color.Beige));
} else {
this.setTitle(getResources().getString(R.string.video));
this.setTitleColor(getResources().getColor(R.color.Beige));
getWindow().setFeatureDrawableResource(Window.FEATURE_RIGHT_ICON,
R.drawable.videoo);
}
}
private void setAdapter() {
SimpleAdapter adapter = new SimpleAdapter(this, dataList,
R.layout.list_row, new String[] { "Image", "text" },
new int[] {
R.id.audiolist_row_img, R.id.audiolist_row_tv });
audioList.setAdapter(adapter);
}
private void setUI() {
for (int a = 0; a <= 11; a++) {
map = new HashMap<String, String>();
map.put("Image", "" + mImages[a]);
map.put("text", mSign[a]);
dataList.add(map);
map = null;
}
}
@Override
protected void onStart() {
super.onStart();
setAdapter();
}
@Override
public void onBackPressed() {
super.onBackPressed();
System.gc();
}
/*private class NextTask extends AsyncTask<Void,Void,Void> {
ProgressDialog progressDailog = new ProgressDialog(Audiovediolist.this);
@Override
protected void onPreExecute() {
super.onPreExecute();
progressDailog.setTitle("Please Wait");
progressDailog.setMessage("URL Data Loading ...");
progressDailog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progressDailog.setCancelable(true);
progressDailog.show();
}
@SuppressWarnings("static-access")
@Override
protected Void doInBackground(Void... params) {
return null;
}
@Override
protected void onPostExecute(Void result) {
progressDailog.dismiss();
}
}*/
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
data = dataList.get(position);
try {
NetWorkCheck netWork = new NetWorkCheck();
if (netWork.isNetWorkConnection(this)) {
if (Screen_Id == 1) {
// new NextTask().execute();
Intent audioInt=new Intent(getApplicationContext(),AudioView.class);
audioInt.setType(data.get("text"));
startActivity(audioInt);
} else if (Screen_Id == 2) {
Intent vedioInt = new Intent(this, VideoPlayActivity.class);
vedioInt.setType(data.get("text"));
startActivity(vedioInt);
}
} else {
netWork.alert();
}
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(this, "Problem while ListItemClick", Toast.LENGTH_SHORT).show();
}
}
}
使用的音频播放器的代码是
public class AudioView extends Activity implements OnClickListener {
private MediaPlayer mMediaPlayer;
private ImageView mPlay;
private ImageView mPause;
private ImageView mBack;
private ImageView mFar;
private ProgressBar myProgressBar;
// private PlayerService mService;
private boolean boolFlag = false;
private boolean isPausedInCall = false;
private String url;
private TelephonyManager mTelephoneMgr;
private NotificationManager mNotificationManager;
private int SIMPLE_NOTFICATION_ID;
private TextView tv;
// private boolean serviceRunning;
Notification notifyDetails;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.audio_main);
getIntentValues();
initUI();
uiListener();
mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notifyDetails = new Notification(R.drawable.mulug_icon, url,
System.currentTimeMillis());
mTelephoneMgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
if (mTelephoneMgr != null) {
mTelephoneMgr.listen(phoneStateListener,
PhoneStateListener.LISTEN_CALL_STATE);
}
}
private void getIntentValues() {
url = getIntent().getType();
}
private void uiListener() {
mPlay.setOnClickListener(this);
mPlay.setOnClickListener(this);
mPause.setOnClickListener(this);
mPause.setVisibility(android.view.View.INVISIBLE);
mBack.setOnClickListener(this);
mFar.setOnClickListener(this);
}
private void initUI() {
tv = (TextView) findViewById(R.id.text);
mBack = (ImageView) findViewById(R.id.back);
mPlay = (ImageView) findViewById(R.id.play);
mPause = (ImageView) findViewById(R.id.pause);
mFar = (ImageView) findViewById(R.id.fwd);
myProgressBar = (ProgressBar) findViewById(R.id.progressbar_Horizontal);
myProgressBar.setProgressDrawable(getResources().getDrawable(
R.drawable.green_progress));
myProgressBar.setProgress(0);
tv.setText(url);
tv.setFocusable(true);
}
private Thread myThread = new Thread() {
public void run() {
while (mMediaPlayer.getCurrentPosition() < mMediaPlayer
.getDuration()) {
try {
myProgressBar
.setProgress(mMediaPlayer.getCurrentPosition());
} catch (Throwable t) {
}
}
}
};
@SuppressLint("NewApi")
@Override
public void onBackPressed() {
super.onBackPressed();
mMediaPlayer.stop();
// myThread.stop();
// mMediaPlayer.release();
mNotificationManager.cancel(SIMPLE_NOTFICATION_ID);
System.gc();
}
@Override
protected void onDestroy() {
super.onDestroy();
System.gc();
}
@SuppressLint("NewApi")
@Override
protected void onStart() {
super.onStart();
this.setProgressBarIndeterminateVisibility(true);
try {
if (boolFlag == false) {
System.out.println(FinalConstants.URL + "mobile-audio/" + url
+ ".mp3");
mMediaPlayer = MediaPlayer.create(
this,
Uri.parse(FinalConstants.URL + "mobile-audio/" + url
+ ".mp3"));
}
myProgressBar.setMax(mMediaPlayer.getDuration());
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Loading Problems",
Toast.LENGTH_SHORT).show();
Log.e("ERRORS", "ServerFailed to Load...");
super.onBackPressed();
e.printStackTrace();
}
}
public PhoneStateListener phoneStateListener = new PhoneStateListener() {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
if (state == TelephonyManager.CALL_STATE_RINGING) {
System.out.println("ringing state");
if (mMediaPlayer != null) {
pauseMedia();
isPausedInCall = true;
}
notificationShow();
}
if (state == TelephonyManager.CALL_STATE_IDLE) {
System.out.println("callState Idle");
if (mMediaPlayer != null) {
if (isPausedInCall) {
isPausedInCall = false;
playMedia();
}
}
}
if (state == TelephonyManager.CALL_STATE_OFFHOOK) {
}
super.onCallStateChanged(state, incomingNumber);
}
};
private void pauseMedia() {
mMediaPlayer.pause();
changePlayerIcons(false);
}
private void playMedia() {
mMediaPlayer.start();
changePlayerIcons(true);
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.play:
if (!boolFlag) {
try {
notificationShow();
mMediaPlayer.setLooping(false);
// mMediaPlayer.prepareAsync();
} catch (Exception e) {
Toast.makeText(this, "preparing", Toast.LENGTH_SHORT)
.show();
}
boolFlag = true;
mMediaPlayer.start();
myThread.start();
} else {
notificationShow();
mMediaPlayer.getCurrentPosition();
mMediaPlayer.start();
}
changePlayerIcons(true);
myProgressBar.setProgress(mMediaPlayer.getCurrentPosition());
mMediaPlayer.setOnCompletionListener(new OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer arg0) {
changePlayerIcons(false);
myProgressBar.setProgress(0);
onStart();
}
});
mMediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
}
});
mMediaPlayer.setOnErrorListener(new OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
Toast.makeText(getApplicationContext(),
"MediaPlayer Errors", Toast.LENGTH_SHORT).show();
Log.e("ERRORS", "MediaPlayer Errors...");
return false;
}
});
break;
case R.id.pause:
mMediaPlayer.pause();
mPlay.setVisibility(android.view.View.VISIBLE);
mPause.setVisibility(android.view.View.INVISIBLE);
break;
case R.id.back:
int dur = mMediaPlayer.getCurrentPosition();
int pos = (dur > 10000 ? dur - 5000 : 0);
mMediaPlayer.seekTo(pos);
break;
case R.id.fwd:
int curpos = mMediaPlayer.getCurrentPosition();
int dur2 = mMediaPlayer.getDuration();
int pos2 = (curpos + 5000 > dur2 ? dur2 : curpos + 5000);
mMediaPlayer.seekTo(pos2);
break;
}
}
private void notificationShow() {
Context context = getApplicationContext();
CharSequence contentTitle = "Mulugu Running";
CharSequence contentText = url + " Weekly Predictions";
Intent notifyIntent = new Intent(AudioView.this, AudioView.class);
PendingIntent intent = PendingIntent.getActivity(AudioView.this, 0,
notifyIntent, android.content.Intent.FLAG_ACTIVITY_NEW_TASK);
notifyDetails.setLatestEventInfo(context, contentTitle, contentText,
intent);
mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
}
private void changePlayerIcons(boolean b) {
if (b) {
mPlay.setVisibility(android.view.View.INVISIBLE);
mPause.setVisibility(android.view.View.VISIBLE);
} else {
mPlay.setVisibility(android.view.View.VISIBLE);
mPause.setVisibility(android.view.View.INVISIBLE);
}
}
}
使用的 XML 是
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/main_audio"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:gravity="center"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.45"
android:orientation="vertical" >
<TextView
android:id="@+id/text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="2dp"
android:ellipsize="marquee"
android:focusable="true"
android:focusableInTouchMode="true"
android:gravity="center_horizontal"
android:marqueeRepeatLimit="marquee_forever"
android:scrollHorizontally="true"
android:singleLine="true"
android:text=" for more details check on "
android:textColor="#FF0000"
android:textSize="20dp"
android:textStyle="italic" >
</TextView>
</LinearLayout>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="3dp" >
<ImageView
android:id="@+id/pause"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:src="@drawable/audio_pause" />
<ImageView
android:id="@+id/play"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginLeft="2dp"
android:layout_marginTop="10dp"
android:src="@drawable/audio_play" />
<ImageView
android:id="@+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/pause"
android:layout_marginRight="1dp"
android:layout_toLeftOf="@+id/pause"
android:layout_toRightOf="@drawable/audio_play"
android:src="@drawable/audio_bwd" />
<ImageView
android:id="@+id/fwd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/pause"
android:layout_marginLeft="1dp"
android:layout_toRightOf="@+id/pause"
android:src="@drawable/audio_fwd" />
</RelativeLayout>
<ProgressBar
android:id="@+id/progressbar_Horizontal"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
下面是
一个例子：
public class TextViewMarquee extends Activity {
private TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv = (TextView) this.findViewById(R.id.tv);
tv.setSelected(true); // Set focus to the textview
}
}
带有文本视图的 xml 文件：
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:lines="1"
android:ellipsize="marquee"
android:fadingEdge="horizontal"
android:marqueeRepeatLimit="marquee_forever"
android:scrollHorizontally="true"
android:textColor="#ff4500"
android:text="Simple application that shows how to use marquee, with a long text" />
</RelativeLayout>