09-15 Camera (摄像机),SoundPool(播放提示音等小音频),VideoView(播放视频),SurfaceView(播放视频),MediaRecorder(录制音频)

//**activitymian.xml**
LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" tools:context=".MainActivity"
android:orientation="vertical">
<Button
android:id="@+id/button_camera"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="摄像机"/>
<ImageView
android:id="@+id/imageview"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

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

//**MainActivity**
public class MainActivity extends AppCompatActivity {
private Button mButtonCamera;
private ImageView mImageView;
private File file;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mImageView= (ImageView) findViewById(R.id.imageview);
mButtonCamera= (Button) findViewById(R.id.button_camera);
mButtonCamera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent();
intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
file=new File(Environment.getExternalStorageDirectory(),System.currentTimeMillis()+".jpg");
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));
startActivityForResult(intent,1231);
}
});
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==1231){
if(resultCode==RESULT_OK){
mImageView.setImageURI(Uri.fromFile(file));
}
}
}
}

//**activity_main.xml**
RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">ti
<Button
android:id="@+id/button_soundpool"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="提示音"/>
</RelativeLayout>

//**MainActivity**
public class MainActivity extends AppCompatActivity {
private Button mButtonSoundPool;
private int VoiceId;
private SoundPool soundPool=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mButtonSoundPool= (Button) findViewById(button_soundpool);
VoiceId=initSoundPool();
mButtonSoundPool.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
playSoundPool();
}
});
}
private int initSoundPool(){
if(Build.VERSION.SDK_INT<21){
soundPool=new SoundPool(2, AudioManager.STREAM_MUSIC,0);
}else{
SoundPool.Builder builder=new SoundPool.Builder();
builder.setMaxStreams(2);
AudioAttributes.Builder attributes=new AudioAttributes.Builder();
attributes.setLegacyStreamType(AudioManager.STREAM_MUSIC);
builder.setAudioAttributes(attributes.build());
soundPool=builder.build();
}
return soundPool.load(getApplicationContext(),R.raw.outgoing,1);
}
public void playSoundPool(){
soundPool.play(VoiceId,1,1,0,-1,1);
}

}

//**activity_main.xml**
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent"  tools:context=".MainActivity"
android:orientation="vertical">
<Button
android:id="@+id/button_videoview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="播放"/>
<VideoView
android:id="@+id/videoView"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1"/>
</LinearLayout>

//**MainActivity**
public class MainActivity extends AppCompatActivity {
private Button mButtonStart;
private VideoView videoView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
videoView= (VideoView) findViewById(R.id.videoView);
mButtonStart= (Button) findViewById(R.id.button_videoview);
mButtonStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
videoView.setVideoPath(Environment.getExternalStorageDirectory()+"/aa.mp4");
videoView.setMediaController(new MediaController(MainActivity.this));
videoView.start();
}
});
}
}

//**activity_main.xml**
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent"  tools:context=".MainActivity"
android:orientation="vertical">
<Button
android:id="@+id/button_startSurface"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="开始播放"/>
<Button
android:id="@+id/button_endSurface"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="停止播放"/>
<SurfaceView
android:id="@+id/surface"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

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

//**MianActivity**
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private Button mButtonStart;
private Button mButtonEnd;
private MediaPlayer mediaPlayer;
private SurfaceView surfaceView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mButtonStart= (Button) findViewById(R.id.button_startSurface);
mButtonStart.setOnClickListener(this);
mButtonEnd= (Button) findViewById(R.id.button_endSurface);
mButtonEnd.setOnClickListener(this);
surfaceView= (SurfaceView) findViewById(R.id.surface);
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.button_startSurface:
try {
mediaPlayer=new MediaPlayer();
mediaPlayer.setDataSource(Environment.getExternalStorageDirectory()+"/aa.mp4");
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDisplay(surfaceView.getHolder());
mediaPlayer.prepare();
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mp.start();
}
});
} catch (IOException e) {
e.printStackTrace();
}
break;
case R.id.button_endSurface:
mediaPlayer.stop();
mediaPlayer.reset();
mediaPlayer.release();
break;
default:
break;
}
}
}

//**activity_main.xml**
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<Button
android:id="@+id/button_startRecorder"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="录制开始"/>
<Button
android:id="@+id/button_endRecorder"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="录制结束"/>
</LinearLayout>

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

//**MainActivity**
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private Button mButtonStartRecord;
private Button mButtonEndRecord;
private MediaRecorder mediaRecorder;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mButtonStartRecord= (Button) findViewById(R.id.button_startRecorder);
mButtonStartRecord.setOnClickListener(this);
mButtonEndRecord= (Button) findViewById(R.id.button_endRecorder);
mButtonEndRecord.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.button_startRecorder:
mediaRecorder=new MediaRecorder();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mediaRecorder.setOutputFile(Environment.getExternalStorageDirectory()+"/myrecord.3gp");
try {
mediaRecorder.prepare();
mediaRecorder.start();
} catch (IOException e) {
e.printStackTrace();
}
break;
case R.id.button_endRecorder:
mediaRecorder.stop();
mediaRecorder.reset();
mediaRecorder.release();
break;
default:
break;
}
}
}