在我的代码中，我实现了滑动布局。我有一个运行视频的首页，而用户交互是在布局上下滑动的情况下完成的。这是代码：
package org.udoo.androidadkdemobidirect;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ValueAnimator;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Point;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Display;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.MediaController;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.ToggleButton;
import android.widget.VideoView;
import java.io.DataOutputStream;
import java.io.IOException;
//import org.udoo.androidadkdemobidirect.sAdkManager;
public class MainActivity extends Activity{
// private static final String TAG = "UDOO_AndroidADKFULL";
private static String mAdkManager=null;
private VideoView myVideoView;
private MediaController mediaControls=null;
private int position = 0;
private String ppm_val=null;
private ToggleButton buttonLED;
private TextView distance;
private Button res_nextBtn;
private TextView res_tv;
private AdkReadTask mAdkReadTask;
private int myInt = -10;
private TextView tv;
private FrameLayout current=null;
private Animation slide_down;
private Animation slide_up;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_LOW_PROFILE
| View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);
//hideNavigationBar();
buttonLED = (ToggleButton) findViewById(R.id.toggleButtonLed);
distance = (TextView) findViewById(R.id.textViewIntro);
buttonLED.setVisibility(View.INVISIBLE);
tv = (TextView) findViewById(R.id.ppm_unique);
if (mediaControls == null) {
mediaControls = new MediaController(this);
}
slide_down = AnimationUtils.loadAnimation(getApplicationContext(),
R.anim.slide_down);
slide_up = AnimationUtils.loadAnimation(getApplicationContext(),
R.anim.slide_up);
res_nextBtn = (Button) findViewById(R.id.result_next_btn);
res_tv = (TextView) findViewById(R.id.result_number_text);
myVideoView = (VideoView) findViewById(R.id.videoView);
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
myVideoView.getHolder().setFixedSize(size.x, size.y);
tv.setText(""+size.x+":"+size.y);
final Animation animation1 = new AlphaAnimation(0.0f, 1.0f);
animation1.setDuration(1000);
animation1.setStartOffset(000);
final Animation animation2 = new AlphaAnimation(1.0f, 0.0f);
animation2.setDuration(1000);
animation2.setStartOffset(500);
//animation1 AnimationListener
animation1.setAnimationListener(new Animation.AnimationListener(){
@Override
public void onAnimationEnd(Animation arg0) {
// start animation2 when animation1 ends (continue)
distance.startAnimation(animation2);
}
@Override
public void onAnimationRepeat(Animation arg0) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationStart(Animation arg0) {
// TODO Auto-generated method stub
}
});
//animation2 AnimationListener
animation2.setAnimationListener(new Animation.AnimationListener(){
@Override
public void onAnimationEnd(Animation arg0) {
// start animation1 when animation2 ends (repeat)
distance.startAnimation(animation1);
}
@Override
public void onAnimationRepeat(Animation arg0) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationStart(Animation arg0) {
// TODO Auto-generated method stub
}
});
distance.startAnimation(animation1);
try {
myVideoView.setVideoURI(Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.sound_758));
} catch (Exception e) {
}
// myVideoView.requestFocus();
//we also set an setOnPreparedListener in order to know when the video file is ready for playback
myVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
public void onPrepared(MediaPlayer mediaPlayer) {
// close the progress bar and play the video
//progressDialog.dismiss();
//if we have a position on savedInstanceState, the video playback should start from here
mediaPlayer.setLooping(true);
myVideoView.seekTo(position);
if (position == 0) {
myVideoView.start();
} else {
//if we come from a resumed activity, video playback will be paused
myVideoView.pause();
}
}
});
((MyApplication) this.getApplication()).init(this);
((MyApplication) this.getApplication()).open();
if (mAdkReadTask==null) {
mAdkReadTask = new AdkReadTask();
mAdkReadTask.execute();
}
}
/************************************************************************************************
* *
* OnClickEvents *
* *
************************************************************************************************/
public void BR_onBuyClick(View view) {
next((FrameLayout) findViewById(R.id.flavours_inc_layout));
}
public void Flavours_onBackClick(View v){
next((FrameLayout) findViewById(R.id.br_inc_layout));
}
public void Flavours_onF1Click(View view) {
next((FrameLayout) findViewById(R.id.ty_inc_layout));
new android.os.Handler().postDelayed(
new Runnable() {
public void run() {
home();
}
},
5000);
}
public void Flavours_onF2Click(View view) {
next((FrameLayout) findViewById(R.id.ty_inc_layout));
new android.os.Handler().postDelayed(
new Runnable() {
public void run() {
home();
}
},
5000);
}
public void Flavours_onF3Click(View view) {
next((FrameLayout) findViewById(R.id.ty_inc_layout));
new android.os.Handler().postDelayed(
new Runnable() {
public void run() {
home();
}
},
5000);
}
private void home() {
current.startAnimation(slide_down);
current.setVisibility(View.INVISIBLE);
current=null;
new android.os.Handler().postDelayed(
new Runnable() {
public void run() {
distance.startAnimation(slide_up);
distance.setVisibility(View.VISIBLE);
final Animation animation1 = new AlphaAnimation(0.0f, 1.0f);
animation1.setDuration(1000);
animation1.setStartOffset(000);
final Animation animation2 = new AlphaAnimation(1.0f, 0.0f);
animation2.setDuration(1000);
animation2.setStartOffset(500);
//animation1 AnimationListener
animation1.setAnimationListener(new Animation.AnimationListener(){
@Override
public void onAnimationEnd(Animation arg0) {
// start animation2 when animation1 ends (continue)
distance.startAnimation(animation2);
}
@Override
public void onAnimationRepeat(Animation arg0) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationStart(Animation arg0) {
// TODO Auto-generated method stub
}
});
//animation2 AnimationListener
animation2.setAnimationListener(new Animation.AnimationListener(){
@Override
public void onAnimationEnd(Animation arg0) {
// start animation1 when animation2 ends (repeat)
distance.startAnimation(animation1);
}
@Override
public void onAnimationRepeat(Animation arg0) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationStart(Animation arg0) {
// TODO Auto-generated method stub
}
});
distance.startAnimation(animation1);
((MyApplication) getApplication()).write("1");
}
},
1000);
}
public void BR_onRecycleClick(View view) {
next((FrameLayout) findViewById(R.id.ready_inc_layout));
}
public void proc_onDoneClick(View v){
next((FrameLayout) findViewById(R.id.delay_inc_layout));
onDelay();
}
public void proc_onCancelClick(View v){
next((FrameLayout) findViewById(R.id.br_inc_layout));
}
private void onDelay() {
final ProgressBar progressBar = (ProgressBar) findViewById(R.id.delay_progressBar);
progressBar.setProgress(0);
progressBar.setVisibility(View.VISIBLE);
ValueAnimator animator = new ValueAnimator();
animator.setObjectValues(0, 100);
animator.setDuration(7000);
final TextView tv = (TextView) findViewById(R.id.delay_textPoints);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
public void onAnimationUpdate(ValueAnimator animation) {
tv.setText("" + animation.getAnimatedValue() +"%");
}
});
animator.addListener(new AnimatorListenerAdapter(){
@Override
public void onAnimationEnd(Animator animator) {
progressBar.setVisibility(View.INVISIBLE);
((MyApplication) getApplication()).write("4");
next((FrameLayout) findViewById(R.id.result_inc_layout));
((MyApplication) getApplication()).write("8");
res_nextBtn.setVisibility(View.INVISIBLE);
}
});
animator.start();
}
public void Res_onNextClick(View v){
next((FrameLayout) findViewById(R.id.points_inc_layout));
onPoints();
}
private void onPoints() {
final ProgressBar progressBar = (ProgressBar) findViewById(R.id.points_progressBar);
progressBar.setProgress(0);
progressBar.setVisibility(View.VISIBLE);
final ValueAnimator animator = new ValueAnimator();
if (myInt>=0) {
animator.setObjectValues(0, (myInt) * 5);
}
else{
animator.setObjectValues(0, 1);
}
animator.setDuration(2000);
final TextView tv = (TextView) findViewById(R.id.points_textPoints);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
public void onAnimationUpdate(ValueAnimator animation) {
tv.setText("" + animation.getAnimatedValue());
}
});
animator.addListener(new AnimatorListenerAdapter(){
@Override
public void onAnimationEnd(Animator animator) {
progressBar.setVisibility(View.INVISIBLE);
}
});
new android.os.Handler().postDelayed(
new Runnable() {
public void run() {
animator.start();
}
},
1500);
}
public void pts_onConfirmClick(View v){
next((FrameLayout) findViewById(R.id.end_inc_layout));
((MyApplication) getApplication()).write("3");
new android.os.Handler().postDelayed(
new Runnable() {
public void run() {
home();
}
},
5000);
}
public void Ready_onYesClick(View v){
((MyApplication) this.getApplication()).write("2");
next((FrameLayout) findViewById(R.id.processing_inc_layout));
onProcessing();
}
private void onProcessing() {
final int[] i = {0};
final int[] drawablearray = new int[]{R.drawable.processing_butts_3, R.drawable.processing_butts_2, R.drawable.processing_butts_1, R.drawable.processing_butts_0};
final ImageView backgroundImageView = (ImageView) findViewById(R.id.processing_textButts);
backgroundImageView.postDelayed(new Runnable() {
public void run() {
backgroundImageView.setImageResource(drawablearray[i[0]++ % drawablearray.length]);
backgroundImageView.postDelayed(this, 1000);
}
}, 1500);
}
public void Ready_onCancelClick(View v){
next((FrameLayout) findViewById(R.id.br_inc_layout));
}
@Override
public void onResume() {
super.onResume();
((MyApplication) this.getApplication()).write("1");
}
@Override
public void onPause() {
super.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
}
private void hideNavigationBar() {
try {
Process process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
/*
enable = enable navigation bar
disable = disable navigation bar
*/
os.writeBytes("pm enable com.android.systemui\n");
os.flush();
os.writeBytes("exit\n");
os.flush();
process.waitFor();
//////////////////////////////////////
} catch (InterruptedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public String output="";
/*
* We put the readSerial() method in an AsyncTask to run the
* continuous read task out of the UI main thread
*/
private class AdkReadTask extends AsyncTask<Void, String, String> {
private boolean running = true;
public void pause(){
running = false;
}
public void start(){
running = true;
}
@Override
protected String doInBackground(Void... params) {
while(running) {
if (this.isCancelled())
break;
String s = ((MyApplication) getApplication()).read();
publishProgress(s);
}
return output;
}
@Override
protected void onProgressUpdate(String... progress) {
if(progress[0].charAt(0)=='P') {
/*
TODO: change text+ppm_val to image+text
TODO: send ppm values to server
*/
tv.setText("Air quality: " + progress[0].substring(1, progress[0].length()));
ppm_val = progress[0].substring(1, progress[0].length());
((MyApplication) getApplication()).setPPM(ppm_val);
}
else if (progress[0].charAt(0)=='R'){
/*
TODO: add server verification of RFID
*/
distance.startAnimation(slide_down);
distance.setVisibility(View.GONE);
next((FrameLayout) findViewById(R.id.br_inc_layout));
}
else if (progress[0].charAt(0)=='C'){
/*
TODO: send data to server
*/
res_tv.setText(""+(int) progress[0].charAt(1));
myInt = (int) progress[0].charAt(1);
res_nextBtn.setVisibility(View.VISIBLE);
}
}
@Override
protected void onPostExecute(String result){
}
}
private void next(final FrameLayout fl) {
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) fl.getLayoutParams();
if (fl == (FrameLayout) findViewById(R.id.flavours_inc_layout)){
params.height = (int) (size.y*0.6);
}
else{
params.height = (int) (size.y*0.3);
}
params.width = size.x;
int delay_delta = 1000;
// Set it back.
fl.setLayoutParams(params);
if(current!=null){
current.startAnimation(slide_down);
current.setVisibility(View.INVISIBLE);
delay_delta=0;
}
new android.os.Handler().postDelayed(
new Runnable() {
public void run() {
fl.startAnimation(slide_up);
fl.setVisibility(View.VISIBLE);
current = fl;
}
},
1200-delay_delta);
}
}
在我尝试更改滑动高度之前，一切正常。我为一个0.6 * y而不是0.3 * y的布局设置了一个特殊情况。布局未显示在0.3标记以上。它确实起作用，当我点击假想的按钮位置时，它会在向下滑动之前显示。
答案 0 :(得分：0)
好的，它是偶然解决的。我将所有View.INVISIBLE更改为View.GONE，它就像瑞士手表一样。我猜这里有一些黑魔法，如果有人可以向我解释为什么会这样，我会非常感激（并接受答案）。感谢。