Android多媒体__信息和简单的音乐播放

接收和发送短信的功能

public class MainActivity extends Activity {

//receive
private TextView sender;
private TextView content;

private IntentFilter receFilter;
private MessagerReceiver messagerReceiver;

//send
private EditText msgInput;
private EditText to;
private Button send;

//监控
private IntentFilter sendFilter;
private SendStatusReceiver sendStatusReceiver;

protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main_layout);

//recieve
sender =(TextView)findViewById(R.id.sender);
content  =(TextView)findViewById(R.id.content);

//动态注册广播
receFilter = new IntentFilter();
receFilter.addAction("android.provider.Telephony.SMS_RECEIVED");

messagerReceiver = new MessagerReceiver();
//注册广播
registerReceiver(messagerReceiver, receFilter);

//send
to = (EditText)findViewById(R.id.to);
msgInput = (EditText)findViewById(R.id.msgInput);

send = (Button)findViewById(R.id.send_button);

//监控，发送是否成功,利用广播
sendFilter = new IntentFilter();
sendFilter.addAction("SENT_SMS_ACTION");
sendStatusReceiver = new SendStatusReceiver();
//注册广播
registerReceiver(sendStatusReceiver, sendFilter);

send.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
SmsManager smsManager = SmsManager.getDefault();
Intent sendIntent = new Intent("SENT_SMS_ACTION");
PendingIntent pi = PendingIntent.getBroadcast(MainActivity.this, 0, sendIntent, 0);

smsManager.sendTextMessage(to.getText().toString(), null, msgInput.getText().toString(), pi, null);
}
});

}

protected void onDestroy(){
//活动退出的时候取消注册
super.onDestroy();
unregisterReceiver(messagerReceiver);
}

class MessagerReceiver extends BroadcastReceiver{

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub

//Bundle
Bundle bundle = intent.getExtras();

//提取短信信息
Object[] pdus = (Object[])bundle.get("pdus");

SmsMessage[] messages = new SmsMessage[pdus.length];

for(int i=0;i<messages.length;i++){
messages[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
}

String address = messages[0].getOriginatingAddress();

String fullMessage = "";

for(SmsMessage message : messages){
fullMessage+=message.getMessageBody();
}
sender.setText(address);
content.setText(fullMessage);
}

}

class SendStatusReceiver extends BroadcastReceiver{

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
if(getResultCode() == RESULT_OK){
Toast.makeText(context, "send success", Toast.LENGTH_SHORT).show();

}else{
Toast.makeText(context, "send failed", Toast.LENGTH_SHORT).show();
}
}

}

}

main_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:padding="10dp"
android:text="From:"/>

<TextView
android:id="@+id/sender"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
/>

</LinearLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:padding="10dp"
android:text="Content:"/>

<TextView
android:id="@+id/content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"/>
</LinearLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:layout_gravity="center_vertical"
android:textSize="20sp"
android:text="To:"/>
<EditText
android:id="@+id/to"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:layout_weight="1"/>
</LinearLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
>

<EditText
android:id="@+id/msgInput"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_gravity="center_vertical"
android:textSize="20sp"
/>
<Button
android:id="@+id/send_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Send"/>
</LinearLayout>

</LinearLayout>

权限
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.SEND_SMS"/>

调用拍照和图片裁减：
public class MainActivity extends Activity {

public static final int TAKE_PHOTO = 1;
public static final int CROP_PHOTO = 2;
public static final int CHOOSE_PHOTO=3;

private Button chooseFromAlbm;
private Button takePhoto;
private ImageView image;

private Uri imageUri;

protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);

takePhoto = (Button)findViewById(R.id.take_photo);
image = (ImageView)findViewById(R.id.image);

takePhoto.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub

//首先先创建文件流存储照片
File outputImage = new File(Environment.getExternalStorageDirectory(),
"output_image.jpg");

try {
if(outputImage.exists()){

outputImage.delete();

}else{

outputImage.createNewFile();
}

} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}

//获取imageUri
imageUri = Uri.fromFile(outputImage);

Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");

intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);

startActivityForResult(intent, TAKE_PHOTO);//打开相机
}
});

chooseFromAlbm = (Button)findViewById(R.id.choose_button);
chooseFromAlbm.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("android.intent.action.GET_CONTENT");

intent.setType("image/*");
startActivityForResult(intent, CHOOSE_PHOTO);
}
});

}

protected void onActivityResult(int requestCode,int resultCode,Intent data){
switch(requestCode){
case TAKE_PHOTO:

Intent intent = new Intent("com.android.camera.action.CROP");
//System.out.println( data.getStringExtra(MediaStore.EXTRA_OUTPUT));
//          System.out.println(data.getDataString());
intent.setDataAndType(imageUri, "image/*");
intent.putExtra("scale", true);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, CROP_PHOTO);
break;
case CROP_PHOTO:
if(resultCode==RESULT_OK){
try {
Bitmap bitmap = BitmapFactory.decodeStream(getContentResolver()
.openInputStream(imageUri));
//将裁减后的图片显示出来
image.setImageBitmap(bitmap);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
break;

case CHOOSE_PHOTO:
if(resultCode==RESULT_OK){
if(Build.VERSION.SDK_INT>=19){
handleImageOnKitKat(data);
}else{
handleImageBeforeKitKat(data);
}
}
break;
default:
break;
}
}

@TargetApi(19)
private void handleImageOnKitKat(Intent data) {
// TODO Auto-generated method stub
String imagePath = null;
Uri uri = data.getData();
//      Log.d("uri", uri.toString());
//      Log.d("uri2", uri.getScheme().toString());
if(DocumentsContract.isDocumentUri(this,uri)){
String docId = DocumentsContract.getDocumentId(uri);
if("com.android.providers.media.documents".
equals(uri.getAuthority())){

String id = docId.split(":")[1];//解析出数字id
String selection = MediaStore.Images.Media._ID+"="+id;
imagePath = getImagePath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,selection);

}else if("com.android.providers.downloads.documents"
.equals(uri.getAuthority())){
Uri contentUri = ContentUris.
withAppendedId(Uri.parse("content://downloads/public_downloads"),
Long.valueOf(docId));

imagePath = getImagePath(contentUri,null);
}

}else if("content".equalsIgnoreCase(uri.getScheme())){

imagePath =getImagePath(uri,null);

}

displayImage(imagePath);

}

private void displayImage(String imagePath) {
// TODO Auto-generated method stub
//      imagePath = "/mnt/sdcard/DCIM/Camera/bcd.jpg";
if(imagePath!=null){

Bitmap bitmap = BitmapFactory.decodeFile(imagePath);

Log.d("imagePath", imagePath);
//图片太大会加载不了，卧槽
image.setImageBitmap(bitmap);

}else {
Toast.makeText(this, "failed to get image", Toast.LENGTH_SHORT).show();
}
}

private void handleImageBeforeKitKat(Intent data) {
// TODO Auto-generated method stub
Uri uri = data.getData();

String imagePath = getImagePath(uri,null);
displayImage(imagePath);
}

private String getImagePath(Uri uri, String selection) {
// TODO Auto-generated method stub

String path = null;
Cursor cursor = getContentResolver().query(uri,
null, selection, null, null);
if(cursor!=null){

if(cursor.moveToFirst()){
path = cursor.getString(cursor.getColumnIndex(Media.DATA));
}
cursor.close();

}
return path;
}
}

main_activity.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<Button
android:id="@+id/take_photo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Take Photo"/>

<Button
android:id="@+id/choose_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Choose From Albm"/>

<ImageView
android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"/>

</LinearLayout>

权限：
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

MP3播放：
public class MainActivity extends Activity implements OnClickListener {

private Button play;
private Button pause;
private Button stop;
private MediaPlayer mediaPlayer = new MediaPlayer();

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

play = (Button) findViewById(R.id.play_button);
pause = (Button) findViewById(R.id.pause_button);
stop = (Button) findViewById(R.id.stop_button);

play.setOnClickListener(this);
pause.setOnClickListener(this);
stop.setOnClickListener(this);

initMediaPlayer();
}

private void initMediaPlayer() {
// TODO Auto-generated method stub
try {
File file = new File(Environment.getExternalStorageDirectory(),
"music.mp3");
mediaPlayer.setDataSource(file.getPath());
mediaPlayer.prepare();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.play_button:
if (!mediaPlayer.isPlaying()) {
mediaPlayer.start();
}
break;
case R.id.pause_button:
if (mediaPlayer.isPlaying()) {
mediaPlayer.pause();

}
break;
case R.id.stop_button:
if (mediaPlayer.isPlaying()) {
//音乐文件重置再初始化
mediaPlayer.reset();
initMediaPlayer();
//对于视频来说就是
//VideoView videoView
//videoView.resume();
}
break;
default:
break;
}
}

protected void onDestroy() {
super.onDestroy();
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
//videoView.suspend();
}
}
}