如何解决如何通过水平滑动来更改TextView的内容？
我有一个正在使用的有声读物应用程序。如果书中有音频，将显示控制器。如果没有，它将仅显示文本。我只想在文本上滑动即可切换章节。我当前正在使用RelativeLayout，文本包装在ScrollView中。我读到我应该使用ViewPager。但是我想知道是否可以继续使用RelativeLayout和ScrollView。
player.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/mainbg">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/m_tab_color"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />
<LinearLayout
android:id="@+id/player_footer_bg"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#FFFFFF"
android:gravity="center"
android:orientation="vertical">
<RelativeLayout
android:id="@+id/linearButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp">
<ImageButton
android:id="@+id/btnRepeat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:background="@null"
android:src="@drawable/btn_repeat"
tools:ignore="ContentDescription" />
<ImageButton
android:id="@+id/btnShuffle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
android:background="@null"
android:src="@drawable/btn_shuffle"
tools:ignore="ContentDescription" />
<ImageButton
android:id="@+id/btnNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerVertical="true"
android:layout_toEndOf="@+id/btnPlay"
android:background="@null"
android:src="@drawable/btn_next"
tools:ignore="ContentDescription" />
<ImageButton
android:id="@+id/btnPlay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_margin="5dp"
android:background="@drawable/btn_play"
android:src="@drawable/pause"
tools:ignore="ContentDescription" />
<ImageButton
android:id="@+id/btnPrevious"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toStartOf="@+id/btnPlay"
android:background="@null"
android:src="@drawable/btn_prev"
tools:ignore="ContentDescription" />
</RelativeLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<FrameLayout
android:id="@+id/ad_view_container"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<RelativeLayout
android:id="@+id/ads_startapp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="gone">
</RelativeLayout>
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:id="@+id/sec_ssekbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@id/player_footer_bg"
android:layout_centerVertical="true"
android:background="#00ffffff"
android:paddingLeft="7dp"
android:paddingRight="7dp">
<SeekBar
android:id="@+id/songProgressBar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:paddingLeft="15dp"
android:paddingRight="15dp"
android:progressTint="#E94C3D"
android:thumb="@drawable/pointer"
android:thumbTint="#E94C3D"
android:thumbOffset="8dp"/>
<TextView
android:id="@+id/songCurrentDurationLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/songProgressBar"
android:gravity="start"
android:text="@string/current_duration"
android:textColor="@color/black"
android:textStyle="bold" />
<TextView
android:id="@+id/songTotalDurationLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_below="@+id/songProgressBar"
android:gravity="end"
android:text="@string/total_duration"
android:textColor="@color/black"
android:textStyle="bold" />
</RelativeLayout>
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/sec_ssekbar"
android:layout_below="@+id/toolbar"
android:layout_centerInParent="true"
android:layout_marginStart="3dp"
android:layout_marginTop="3dp"
android:layout_marginEnd="3dp"
android:layout_marginBottom="3dp"
android:background="#B3FFFFFF">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/text_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginTop="3dp"
android:layout_marginEnd="5dp"
android:layout_marginBottom="3dp"
android:gravity="center"
android:text="@string/app_name"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="@color/black"
android:textStyle="bold" />
<TextView
android:id="@+id/text_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginTop="5dp"
android:layout_marginEnd="5dp"
android:layout_marginBottom="5dp"
android:text="@string/app_name"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="@color/black" />
</LinearLayout>
</ScrollView>
</RelativeLayout>
MusicPlayActivity.java
public class MusicPlayActivity extends AppCompatActivity implements OnCompletionListener,SeekBar.OnSeekBarChangeListener {
Toolbar toolbar;
private ImageButton btnPlay;
private ImageButton btnRepeat;
private ImageButton btnShuffle;
private MediaPlayer mp;
ImageView img_song;
private int currentSongIndex = 0;
private boolean isShuffle = false;
private boolean isRepeat = false;
String[] allArrayImage,allArrayMusicCatName,allArrayMusicShare;
String[] allArrayMusicId,allArrayMusicCatId,allArrayMusicurl,allArrayMusicName,allArrayMusicDuration,allArrayMusicDesc;
int position = currentSongIndex;
int music_id;
private SeekBar songProgressBar;
private TextView songCurrentDurationLabel;
private TextView songTotalDurationLabel;
private Utilities utils;
private Handler mHandler = new Handler();
private Menu menu;
DatabaseHandler db;
String mp3id,mp3catid,mp3name,mp3url,mp3duration,mp3desc,mp3shareurl,mp3image,mp3catname;
private ActionClickItem actionClickItem;
private InterstitialAd mInterstitialAd;
private int btNextClicked = 1;
private AdsObj adsObj;
private StartAppAd startAppAd;
private boolean runClickExecuted;
private AdView adView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.player);
MobileAds.initialize(this,new OnInitializationCompleteListener() {
@Override
public void onInitializationComplete(InitializationStatus initializationStatus) {}
});
btnPlay = findViewById(R.id.btnPlay);
ImageButton btnNext = findViewById(R.id.btnNext);
ImageButton btnPrevious = findViewById(R.id.btnPrevious);
btnRepeat = findViewById(R.id.btnRepeat);
btnShuffle = findViewById(R.id.btnShuffle);
TextView songTitleLabel = findViewById(R.id.text_title);
TextView songDesc = findViewById(R.id.text_description);
img_song = findViewById(R.id.image);
songProgressBar = findViewById(R.id.songProgressBar);
songCurrentDurationLabel = findViewById(R.id.songCurrentDurationLabel);
songTotalDurationLabel = findViewById(R.id.songTotalDurationLabel);
//imageView = (ImageView)findViewById(R.id.full_image);
// imageLoader=new ImageLoader(this);
db = new DatabaseHandler(this);
toolbar = this.findViewById(R.id.toolbar);
toolbar.setTitle(Constant.MUSIC_NAME);
this.setSupportActionBar(toolbar);
Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
utils = new Utilities();
mp = new MediaPlayer();
Intent i = getIntent();
music_id = i.getIntExtra("POSITION",0);
allArrayImage = i.getStringArrayExtra("MP3_IMAGE");
allArrayMusicCatName = i.getStringArrayExtra("MP3_CATNAME");
allArrayMusicShare = i.getStringArrayExtra("MP3_SHARE");
allArrayMusicId = i.getStringArrayExtra("MP3_CID");
allArrayMusicCatId = i.getStringArrayExtra("MP3_CATID");
allArrayMusicurl = i.getStringArrayExtra("MP3_URL");
allArrayMusicName = i.getStringArrayExtra("MP3_NAME");
allArrayMusicDuration = i.getStringArrayExtra("MP3_DURATION");
allArrayMusicDesc = i.getStringArrayExtra("MP3_DISCRIPTION");
position = getPositionFromArray(String.valueOf(music_id));
Log.e("POSITIO","" + position);
playSong(position);
songProgressBar.setOnSeekBarChangeListener(this);
mp.setOnCompletionListener(this);
btnPlay.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// check for already playing
if (mp.isPlaying()) {
if (mp != null) {
mp.pause();
// Changing button image to play button
btnPlay.setImageResource(R.drawable.btn_play);
}
} else {
// Resume song
if (mp != null) {
mp.start();
// Changing button image to pause button
btnPlay.setImageResource(R.drawable.btn_paush);
}
}
}
});
btnNext.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
btNextClicked++;
if ((btNextClicked % 3 == 0)) {
actionItemClicked(new ActionClickItem() {
@Override
public void runClick() {
// check if next song is there or not
if (position < (allArrayMusicurl.length - 1)) {
playSong(position + 1);
position = position + 1;
} else {
// play first song
playSong(0);
position = 0;
}
}
});
} else {
// check if next song is there or not
if (position < (allArrayMusicurl.length - 1)) {
position = position + 1;
playSong(position + 1);
} else {
// play first song
playSong(0);
position = 0;
}
}
}
});
btnPrevious.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
if (position > 0) {
playSong(position - 1);
position = position - 1;
} else {
// play last song
playSong(allArrayMusicurl.length - 1);
position = allArrayMusicurl.length - 1;
}
}
});
btnRepeat.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
if (isRepeat) {
isRepeat = false;
Toast.makeText(getApplicationContext(),"Repeat is OFF",Toast.LENGTH_SHORT).show();
btnRepeat.setImageResource(R.drawable.btn_repeat);
} else {
// make repeat to true
isRepeat = true;
Toast.makeText(getApplicationContext(),"Repeat is ON",Toast.LENGTH_SHORT).show();
// make shuffle to false
isShuffle = false;
btnRepeat.setImageResource(R.drawable.btn_repeat_focused);
btnShuffle.setImageResource(R.drawable.btn_shuffle);
}
}
});
btnShuffle.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
if (isShuffle) {
isShuffle = false;
Toast.makeText(getApplicationContext(),"Shuffle is OFF",Toast.LENGTH_SHORT).show();
btnShuffle.setImageResource(R.drawable.btn_shuffle);
} else {
// make repeat to true
isShuffle = true;
Toast.makeText(getApplicationContext(),"Shuffle is ON",Toast.LENGTH_SHORT).show();
// make shuffle to false
isRepeat = false;
btnShuffle.setImageResource(R.drawable.btn_shuffle_focused);
btnRepeat.setImageResource(R.drawable.btn_repeat);
}
}
});
//int songIndex = i.getIntExtra("songIndex",0);
// Displaying Song title
String songTitle = allArrayMusicName[position];
songTitleLabel.setText(songTitle);
toolbar.setTitle(songTitle);
String musicUrl = allArrayMusicurl[position];
if(musicUrl.equals(".")){
songProgressBar.setVisibility(View.GONE);
songCurrentDurationLabel.setVisibility(View.GONE);
songTotalDurationLabel.setVisibility(View.GONE);
RelativeLayout linearButton = findViewById(R.id.linearButton);
linearButton.setVisibility(View.GONE);
}
@SuppressLint("CutPasteId") FrameLayout frameAds1 = findViewById(R.id.ad_view_container);
AdsAssistants adsAssistants = new AdsAssistants(this);
adsObj = adsAssistants.getSessionAdsObj();
if (adsObj != null) {
if (adsObj.getCurrentActivatedAds().equals(AdsConfig.ADS_ADMOB)) {
frameAds1.setVisibility(View.VISIBLE);
adsAssistants.createAdmobBanner(frameAds1,adsObj.getADS_ADMOB_BANNER());
} else {
startAppAd = new StartAppAd(this);
@SuppressLint("CutPasteId") FrameLayout frameAds = findViewById(R.id.ad_view_container);
frameAds.setVisibility(View.VISIBLE);
adsAssistants.createStartAppBanner(frameAds);
}
}
}
public void actionItemClicked(ActionClickItem actionClickItemParam) {
actionClickItem = actionClickItemParam;
if (adsObj == null) {
actionClickItem.runClick();
} else {
if (adsObj.getCurrentActivatedAds().equals(AdsConfig.ADS_ADMOB)) {
if (mInterstitialAd != null && mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
} else {
actionClickItem.runClick();
generateInterstitialAd();
}
} else {
startAppAd.loadAd(new AdEventListener() {
@Override
public void onReceiveAd(Ad ad) {
}
@Override
public void onFailedToReceiveAd(Ad ad) {
// actionClickItem.runClick();
}
});
StartAppAd.disableAutoInterstitial();
startAppAd.showAd(new AdDisplayListener() {
@Override
public void adHidden(Ad ad) {
if(!runClickExecuted){
runClickExecuted = true;
actionClickItem.runClick();
}
Log.d("YWV","Action clicked");
}
@Override
public void adDisplayed(Ad ad) {
}
@Override
public void adClicked(Ad ad) {
}
@Override
public void adNotDisplayed(Ad ad) {
}
});
}
}
}
private void generateInterstitialAd() {
mInterstitialAd = new InterstitialAd(this);
mInterstitialAd.setAdUnitId(adsObj.getADS_ADMOB_INTERSTITIALS());
mInterstitialAd.setAdListener(new AdListener() {
@Override
public void onAdLoaded() {
// mNextLevelButton.setEnabled(true);
}
@Override
public void onAdFailedToLoad(int errorCode) {
// mNextLevelButton.setEnabled(true);
}
@Override
public void onAdClosed() {
// Proceed to the next level.
//finish();
//showDialogApp();
actionClickItem.runClick();
generateInterstitialAd();
}
});
AdRequest adRequestIn = new AdRequest.Builder().build();
mInterstitialAd.loadAd(adRequestIn);
}
@Override
protected void onActivityResult(int requestCode,int resultCode,Intent data) {
super.onActivityResult(requestCode,resultCode,data);
if (resultCode == 100) {
position = Objects.requireNonNull(data.getExtras()).getInt("songIndex");
// play selected song
playSong(position);
}else if(resultCode == 11){
runClickExecuted = false;
}
}
public void playSong(int songIndex) {
// Play song
try {
// if(needResetFirst){
mp.reset();
// }
mp.setDataSource(allArrayMusicurl[songIndex]);
mp.prepare();
mp.start();
// // Displaying Song title
TextView songTitleLabel = findViewById(R.id.text_title);
String songTitle = allArrayMusicName[songIndex];
songTitleLabel.setText(songTitle);
toolbar.setTitle(songTitle);
TextView songDesc = findViewById(R.id.text_description);
String songDescd = allArrayMusicDesc[songIndex];
songDesc.setText(songDescd);
// Toast.makeText(getApplicationContext(),img_name,Toast.LENGTH_SHORT).show();
// imageLoader.DisplayImage(Constant.SERVER_IMAGE_UPFOLDER1+img_name,imageView);
// Log.e("IMAGEPATH",""+Constant.SERVER_IMAGE_UPFOLDER1+img_name);
// Toast.makeText(getApplicationContext(),Constant.SERVER_IMAGE_UPFOLDER1+img_name,Toast.LENGTH_SHORT).show();
// Changing Button Image to pause image
btnPlay.setImageResource(R.drawable.btn_paush);
songProgressBar.setProgress(0);
songProgressBar.setMax(100);
// Updating progress bar
updateProgressBar();
// set Progress bar values
} catch (IllegalArgumentException | IllegalStateException | IOException e) {
e.printStackTrace();
}
}
@Override
public void onCompletion(MediaPlayer arg0) {
// check for repeat is ON or OFF
if (isRepeat) {
// repeat is on play same song again
playSong(position);
} else if (isShuffle) {
// shuffle is on - play a random song
Random rand = new Random();
position = rand.nextInt((allArrayMusicurl.length - 1) + 1);
playSong(position);
} else {
// no repeat or shuffle ON - play next song
if (position < (allArrayMusicurl.length - 1)) {
playSong(position + 1);
position = position + 1;
} else {
// play first song
playSong(0);
position = 0;
}
}
}
@Override
public void onBackPressed() {
// TODO Auto-generated method stub
super.onBackPressed();
if (mp != null) {
mp.reset();
mp.release();
mp = null;
mHandler.removeCallbacks(mUpdateTimeTask);
}
setResult(RESULT_OK);
finish();
}
public void updateProgressBar() {
mHandler.postDelayed(mUpdateTimeTask,100);
}
private Runnable mUpdateTimeTask = new Runnable() {
public void run() {
long totalDuration = mp.getDuration();
long currentDuration = mp.getCurrentPosition();
// Displaying Total Duration time
songTotalDurationLabel.setText(utils.milliSecondsToTimer(totalDuration));
// Displaying time completed playing
songCurrentDurationLabel.setText(utils.milliSecondsToTimer(currentDuration));
// Updating progress bar
int progress = utils.getProgressPercentage(currentDuration,totalDuration);
//Log.d("Progress",""+progress);
songProgressBar.setProgress(progress);
// Running this thread after 100 milliseconds
mHandler.postDelayed(this,100);
}
};
@Override
public void onProgressChanged(SeekBar seekBar,int progress,boolean fromTouch) {
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// remove message Handler from updating progress bar
mHandler.removeCallbacks(mUpdateTimeTask);
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
mHandler.removeCallbacks(mUpdateTimeTask);
int totalDuration = mp.getDuration();
int currentPosition = utils.progressToTimer(seekBar.getProgress(),totalDuration);
// forward or backward to certain seconds
mp.seekTo(currentPosition);
// update timer progress again
updateProgressBar();
}
public void AddtoFav(int position) {
mp3id = allArrayMusicId[position];
// mp3catid=allArrayMusicCatId[position];
mp3catname = allArrayMusicCatName[position];
mp3url = allArrayMusicurl[position];
mp3image = allArrayImage[position];
mp3name = allArrayMusicName[position];
mp3duration = allArrayMusicDuration[position];
mp3desc = allArrayMusicDesc[position];
// mp3shareurl=allArrayMusicShare[position];
db.AddtoFavorite(new Pojo(mp3id,mp3catname,mp3shareurl));
Toast.makeText(getApplicationContext(),"Added to Favorite",Toast.LENGTH_SHORT).show();
// fabfav.setImageDrawable(getResources().getDrawable(R.drawable.fav_hover));
}
//remove from favorite
public void RemoveFav(int position) {
mp3id = allArrayMusicId[position];
db.RemoveFav(new Pojo(mp3id));
Toast.makeText(getApplicationContext(),"Removed from Favorite",Toast.LENGTH_SHORT).show();
// fabfav.setImageDrawable(getResources().getDrawable(R.drawable.fav_hover));
}
public void FirstFav() {
mp3id = allArrayMusicId[position];
List<Pojo> pojolist = db.getFavRow(mp3id);
if (pojolist.size() == 0) {
menu.getItem(0).setIcon(getResources().getDrawable(R.drawable.fav));
} else {
if (pojolist.get(0).getMp3Id().equals(mp3id)) {
menu.getItem(0).setIcon(getResources().getDrawable(R.drawable.fav_hover));
}
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_mp3,menu);
this.menu = menu;
//for when 1st item of view pager is favorite mode
FirstFav();
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case android.R.id.home:
onBackPressed();
return true;
case R.id.menu_fav:
mp3id = allArrayMusicId[position];
List<Pojo> pojolist = db.getFavRow(mp3id);
if (pojolist.size() == 0) {
AddtoFav(position);//if size is zero i.e means that record not in database show add to favorite
menu.getItem(0).setIcon(getResources().getDrawable(R.drawable.fav_hover));
} else {
if (pojolist.get(0).getMp3Id().equals(mp3id)) {
RemoveFav(position);
}
menu.getItem(0).setIcon(getResources().getDrawable(R.drawable.fav));
}
return true;
case R.id.menu_share:
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
sharingIntent.putExtra(Intent.EXTRA_TEXT,"Listen to this verse from " + Constant.APP_NAME + "\n" + "http://play.google.com/store/apps/details?id=" + getPackageName());
sharingIntent.setType("text/plain");
startActivity(Intent.createChooser(sharingIntent,"Share Link"));
return true;
default:
return super.onOptionsItemSelected(menuItem);
}
}
public int getPositionFromArray(String id) {
return Arrays.asList(allArrayMusicId).indexOf(id);
}
@Override
public void onResume() {
super.onResume();
if (adView != null) {
adView.resume();
}
}
/** Called when leaving the activity */
@Override
public void onPause() {
if (adView != null) {
adView.pause();
}
super.onPause();
}
/** Called before the activity is destroyed */
@Override
public void onDestroy() {
super.onDestroy();
if (mp != null) {
mp.reset();
mp.release();
mHandler.removeCallbacks(mUpdateTimeTask);
mp = null;
}
finish();
if (adView != null) {
adView.destroy();
}
}
}
提前谢谢！
解决方法
您可以通过在任意视图上附加>>> s='hyödyt'
>>> s.encode('cp1252').decode('utf8').encode('cp1252').decode('utf8')
'hyödyt'
>>> s='löydät'
>>> s.encode('cp1252').decode('utf8').encode('cp1252').decode('utf8')
'löydät'
来检测手势。
但是，在您的情况下，您尝试检测滑动手势，因此最好的解决方案是通过扩展onTouchListener来创建手势检测器类，如本教程（第4步）：
>完成此操作后，您可以轻松地将swipe-detector类附加到您的任何视图，如下所示：
onTouchListener您是否尝试过像https://stackoverflow.com/a/12938787/4330467这样添加OnSwipeTouchListener？ 相对布局不应该成为问题
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