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hzuapps#90 hzuapps#91 hzuapps#82 实验4+实验5
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@ZaakLim
ZaakLim committed May 8, 2016
1 parent 16e9ca7 commit e024ae2
Showing 1 changed file with 72 additions and 42 deletions.
114 changes: 72 additions & 42 deletions ...in/java/edu/hzuapps/androidworks/homeworks/net1314080903125/Net1314080903125Activity.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,94 +21,124 @@

public class Net1314080903125Activity extends AppCompatActivity {

private static int CAMERA_REQUEST_CODE = 1;
private static int GALLERY_REQUEST_CODE = 2;
private static int CAMERA_REQUEST_CODE = 1; //摄像头请求码
private static int GALLERY_REQUEST_CODE = 2; //图库请求码
private static int CROP_REQUEST_CODE=3; //裁剪器请求码

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.net1314080903125);


Button btn_camera = (Button) findViewById(R.id.btn_camera);
Button btn_camera = (Button) findViewById(R.id.btn_camera); //摄像头按钮
btn_camera.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//打开拍照界面
startActivityForResult(intent, CAMERA_REQUEST_CODE);
}
});

Button btn_gallery = (Button)findViewById(R.id.btn_gallery);
Button btn_gallery = (Button)findViewById(R.id.btn_gallery); //图库按钮
btn_gallery.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
Intent intent = new Intent(Intent.ACTION_GET_CONTENT); //打开图库界面
intent.setType("image/*"); //文件类型
startActivityForResult(intent, GALLERY_REQUEST_CODE);
}
});
}
private Uri saveBitmap(Bitmap bm)
private Uri saveBitmap(Bitmap bm) //将Bitmap数据保存到sd卡
{
File tmpDir = new File(Environment.getExternalStorageDirectory() +"/com.zaak.zaaklim");
if(!tmpDir.exists())
File tmpDir = new File(Environment.getExternalStorageDirectory() + "/zaak"); //获取sd卡中的路径
if (!tmpDir.exists()) //判断路径是否存在
{
tmpDir.mkdir();
tmpDir.mkdir(); //创建文件夹
}
File img = new File(tmpDir.getAbsolutePath() +"zaaklim.png");
try{
FileOutputStream fos = new FileOutputStream(img);
bm.compress(Bitmap.CompressFormat.PNG,85,fos);
fos.flush();
fos.close();
return Uri.fromFile(img);
}catch (FileNotFoundException e){
e.printStackTrace();
return null;
}catch(IOException e){
e.printStackTrace();
return null;

File img = new File(tmpDir.getAbsolutePath() + "zaak.png"); //创建图像文件对象
try {
FileOutputStream fos = new FileOutputStream(img); //获取输出流
bm.compress(Bitmap.CompressFormat.PNG, 85, fos); //将数据写入输出流
fos.flush(); //刷新
fos.close();
return Uri.fromFile(img); //返回File类型Uri
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}

private Uri convertUri(Uri uri)

private Uri convertUri(Uri uri) //转换Uri
{
InputStream is = null;
try{
is = getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(is);
try {
is = getContentResolver().openInputStream(uri); //获取InputStream
Bitmap bitmap = BitmapFactory.decodeStream(is); //将InputStream转换成bitmap
is.close();
return saveBitmap(bitmap);
}catch (FileNotFoundException e){
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
}catch (IOException e){
} catch (IOException e) {
e.printStackTrace();
return null;
}
}



private void startImageZoom(Uri uri){ //图像裁剪功能
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri,"image/*"); //数据通过uri传递；类型为image
intent.putExtra("crop","true");
intent.putExtra("aspectX",1);
intent.putExtra("aspectY",1); //宽高的比例
intent.putExtra("outputX",150);
intent.putExtra("outputY",150);
intent.putExtra("return-data",true);
startActivityForResult(intent,CROP_REQUEST_CODE); //启动图像裁剪界面
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST_CODE) {
if (data == null) {
protected void onActivityResult(int requestCode, int resultCode, Intent data) { //对拍照数据的处理
if (requestCode == CAMERA_REQUEST_CODE) { //判断请求码
if (data == null) { //取消
return;
} else {
Bundle extras = data.getExtras();
Bundle extras = data.getExtras(); //取出数据
if (extras != null) {
Bitmap bm = extras.getParcelable("data");
ImageView imageView = (ImageView) findViewById(R.id.imageView);
imageView.setImageBitmap(bm);
Bitmap bm = extras.getParcelable("data"); //保存拍摄数据
// ImageView imageView = (ImageView) findViewById(R.id.imageView);
// imageView.setImageBitmap(bm); //显示数据（imageView）
Uri uri = saveBitmap(bm); //获取bm的uri
startImageZoom(uri);
}
}
} else if (requestCode == GALLERY_REQUEST_CODE) {
}
else if (requestCode == GALLERY_REQUEST_CODE) {
if (data == null) {
return;
}
Uri uri;
uri = data.getData();
Toast.makeText(Net1314080903125Activity.this, uri.toString(), Toast.LENGTH_LONG).show();
uri = data.getData(); //所选图片对应的Uri
Uri fileUri = convertUri(uri); //转换uri
startImageZoom(fileUri);

}
}
else if (requestCode == CROP_REQUEST_CODE){ //获取图像数据并显示在imageView
if(data == null){
return;
}
Bundle extras = data.getExtras();
Bitmap bm = extras.getParcelable("data");
ImageView imageView = (ImageView)findViewById(R.id.imageView);
imageView.setImageBitmap(bm);
}
}

}

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