在我的Android应用程序开始一个新的声音之前停止prevoius声音 [英] Stop the prevoius sound before starting a new sound in my android app
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问题描述
这code不工作..谁能帮助我。当我运行此code是给了一个错误，说部队密切application.I要开始一个新的声音结果
每次点击。在这里我使用的图像作为我的按钮的
包com.kle;进口java.io.IOException异常;进口com.kle.Kid.R;进口android.app.Activity;
进口android.media.MediaPlayer;
进口android.os.Bundle;
进口android.view.View;
进口android.view.View.OnClickListener;
//进口android.widget.Button;
进口android.widget.ImageView;
公共类十三扩展活动实现OnClickListener {INT标志= 1;
//按钮B1;
MediaPlayer的MP1，MP2，MP3，MP4，MP5，MP6，MP7，MP8，MP9，MP10;
ImageView的IV;
@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
// TODO自动生成方法存根
super.onCreate（savedInstanceState）;
的setContentView（R.layout.thirteen）; IV =（ImageView的）findViewById（R.id.imageView1）; ImageView的此搜索=（ImageView的）findViewById（R.id.imageView1）;
ImageView的IMAGE2 =（ImageView的）findViewById（R.id.imageView2）;
ImageView的图像3 =（ImageView的）findViewById（R.id.imageView3）;
ImageView的图片4 =（ImageView的）findViewById（R.id.imageView4）;
ImageView的图像5 =（ImageView的）findViewById（R.id.imageView5）;
ImageView的图片6 =（ImageView的）findViewById（R.id.imageView6）;
ImageView的图片7 =（ImageView的）findViewById（R.id.imageView7）;
ImageView的图片8 =（ImageView的）findViewById（R.id.imageView8）;
ImageView的图片9 =（ImageView的）findViewById（R.id.imageView9）;
ImageView的image10 =（ImageView的）findViewById（R.id.imageView10）; // B1 =（按钮）findViewById（R.id.button1）;
MP1 = MediaPlayer.create（Thirteen.this，R.raw.one）;
MP2 = MediaPlayer.create（Thirteen.this，R.raw.two）;
MP3 = MediaPlayer.create（Thirteen.this，R.raw.three）;
MP4 = MediaPlayer.create（Thirteen.this，R.raw.four）;
MP5 = MediaPlayer.create（Thirteen.this，R.raw.five）;
MP6 = MediaPlayer.create（Thirteen.this，R.raw.six）;
MP7 = MediaPlayer.create（Thirteen.this，R.raw.seven）;
MP8 = MediaPlayer.create（Thirteen.this，R.raw.eight）;
MP9 = MediaPlayer.create（Thirteen.this，R.raw.nine）;
MP10 = MediaPlayer.create（Thirteen.this，R.raw.ten）;
image1.setOnClickListener（本）;
image2.setOnClickListener（本）;
image3.setOnClickListener（本）;
image4.setOnClickListener（本）;
image5.setOnClickListener（本）;
image6.setOnClickListener（本）;
image7.setOnClickListener（本）;
image8.setOnClickListener（本）;
image9.setOnClickListener（本）;
image10.setOnClickListener（本）;
//b1.setOnClickListener(this）;
}公共无效的onClick（视图v）{
// TODO自动生成方法存根
开关（v.getId（））{ 案例R.id.imageView1：{
iv.setImageResource（R.drawable.kidone）;
mp2.stop（）;
mp3.stop（）;
mp4.stop（）;
mp5.stop（）;
mp6.stop（）;
mp7.stop（）;
mp8.stop（）;
mp9.stop（）;
mp10.stop（）; 尝试{
。MP1 prepare（）;
}赶上（IllegalStateException异常五）{
// TODO自动生成catch块
e.printStackTrace（）;
}赶上（IOException异常五）{
// TODO自动生成catch块
e.printStackTrace（）;
}
mp1.seekTo（0）;
mp1.start（）;
打破;
}
案例R.id.imageView2：{
iv.setImageResource（R.drawable.kidtwo）;
mp1.stop（）;
mp3.stop（）;
mp4.stop（）;
mp5.stop（）;
mp6.stop（）;
mp7.stop（）;
mp8.stop（）;
mp9.stop（）;
mp10.stop（）; 尝试{
。MP2 prepare（）;
}赶上（IllegalStateException异常五）{
// TODO自动生成catch块
e.printStackTrace（）;
}赶上（IOException异常五）{
// TODO自动生成catch块
e.printStackTrace（）;
}
mp2.seekTo（0）;
mp2.start（）; 打破;
}
案例R.id.imageView3：{
iv.setImageResource（R.drawable.kidthree）; mp2.stop（）;
mp1.stop（）;
mp4.stop（）;
mp5.stop（）;
mp6.stop（）;
mp7.stop（）;
mp8.stop（）;
mp9.stop（）;
mp10.stop（）; 尝试{
。MP3 prepare（）;
}赶上（IllegalStateException异常五）{
// TODO自动生成catch块
e.printStackTrace（）;
}赶上（IOException异常五）{
// TODO自动生成catch块
e.printStackTrace（）;
}
mp3.seekTo（0）;
mp3.start（）; 打破;
}
解决方案
首先，您必须检查你的logcat的例外情况，这样它会更容易为你找到问题的根源。
现在，您的问题：你停止这是不是在玩一个媒体播放器...
停止媒体播放器前添加一个检查：
私人无效stopPlaying（MediaPlayer的MP）
{
如果（MP =空＆安培;！＆安培; mp.isPlaying（））
{
mp.stop（）;
}
}
和调用：
stopPlaying（MP1）;
stopPlaying（MP2）;
stopPlaying（MP3）;
...
（虽然我会使用一个数组为这种编码preFER因为这将使code更具可读性，更容易维护 - 使用循环）。
This code is not working.. Can anyone help me out. when i had run this code is gave an error saying force close application.I want to start a new sound with
each click. here i am using images as my buttons.
package com.kle;
import java.io.IOException;
import com.kle.Kid.R;
import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
//import android.widget.Button;
import android.widget.ImageView;
public class Thirteen extends Activity implements OnClickListener{
int flag=1;
//Button b1;
MediaPlayer mp1,mp2,mp3,mp4,mp5,mp6,mp7,mp8,mp9,mp10;
ImageView iv;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.thirteen);
iv=(ImageView) findViewById(R.id.imageView1);
ImageView image1=(ImageView) findViewById(R.id.imageView1);
ImageView image2=(ImageView) findViewById(R.id.imageView2);
ImageView image3=(ImageView) findViewById(R.id.imageView3);
ImageView image4=(ImageView) findViewById(R.id.imageView4);
ImageView image5=(ImageView) findViewById(R.id.imageView5);
ImageView image6=(ImageView) findViewById(R.id.imageView6);
ImageView image7=(ImageView) findViewById(R.id.imageView7);
ImageView image8=(ImageView) findViewById(R.id.imageView8);
ImageView image9=(ImageView) findViewById(R.id.imageView9);
ImageView image10=(ImageView) findViewById(R.id.imageView10);
//b1= (Button) findViewById(R.id.button1);
mp1= MediaPlayer.create(Thirteen.this, R.raw.one);
mp2= MediaPlayer.create(Thirteen.this, R.raw.two);
mp3= MediaPlayer.create(Thirteen.this, R.raw.three);
mp4= MediaPlayer.create(Thirteen.this, R.raw.four);
mp5= MediaPlayer.create(Thirteen.this, R.raw.five);
mp6= MediaPlayer.create(Thirteen.this, R.raw.six);
mp7= MediaPlayer.create(Thirteen.this, R.raw.seven);
mp8= MediaPlayer.create(Thirteen.this, R.raw.eight);
mp9= MediaPlayer.create(Thirteen.this, R.raw.nine);
mp10= MediaPlayer.create(Thirteen.this, R.raw.ten);
image1.setOnClickListener(this);
image2.setOnClickListener(this);
image3.setOnClickListener(this);
image4.setOnClickListener(this);
image5.setOnClickListener(this);
image6.setOnClickListener(this);
image7.setOnClickListener(this);
image8.setOnClickListener(this);
image9.setOnClickListener(this);
image10.setOnClickListener(this);
//b1.setOnClickListener(this);
}
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId()){
case R.id.imageView1: {
iv.setImageResource(R.drawable.kidone);
mp2.stop();
mp3.stop();
mp4.stop();
mp5.stop();
mp6.stop();
mp7.stop();
mp8.stop();
mp9.stop();
mp10.stop();
try {
mp1.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mp1.seekTo(0);
mp1.start();
break;
}
case R.id.imageView2: {
iv.setImageResource(R.drawable.kidtwo);
mp1.stop();
mp3.stop();
mp4.stop();
mp5.stop();
mp6.stop();
mp7.stop();
mp8.stop();
mp9.stop();
mp10.stop();
try {
mp2.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mp2.seekTo(0);
mp2.start();
break;
}
case R.id.imageView3: {
iv.setImageResource(R.drawable.kidthree);
mp2.stop();
mp1.stop();
mp4.stop();
mp5.stop();
mp6.stop();
mp7.stop();
mp8.stop();
mp9.stop();
mp10.stop();
try {
mp3.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mp3.seekTo(0);
mp3.start();
break;
}
解决方案
First of all you must check your logcat for the exceptions so that it would be easier for you to find the source of the problem. Now for your problem: you're stopping a media player which isn't playing... Add a check before stopping the media player:
private void stopPlaying(MediaPlayer mp)
{
if (mp != null && mp.isPlaying())
{
mp.stop();
}
}
And call:
stopPlaying(mp1);
stopPlaying(mp2);
stopPlaying(mp3);
...
(Although I would prefer using an array for this kind of coding as it would make the code far more readable and easier to maintain - using loops).
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