public class MainActivity extends AppCompatActivity {
public static final int NONE = 0;
public static final int PHOTOHRAPH = 1;// 拍照
public static final int PHOTOZOOM = 2; // 缩放
public static final int PHOTORESOULT = 3;// 结果
public static final String IMAGE_UNSPECIFIED = "image/*";
Button button0 = null;
Button button1 = null;
private Button mQuXiao;
private CircleImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView() {
imageView = (CircleImageView) findViewById(R.id.imageID);
SharedPreferences spf = getSharedPreferences("testSP", 0);
// 第一步:取出字符串形式的Bitmap
String image = spf.getString("image", "");
// 第二步:利用Base64将字符串转换为ByteArrayInputStream
byte[] byteArray = Base64.decode(image, Base64.DEFAULT);
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(
byteArray);
// 第三步:利用ByteArrayInputStream生成Bitmap
Bitmap bitmap = BitmapFactory.decodeStream(byteArrayInputStream);
//设置图片到imageview
imageView.setImageBitmap(bitmap);
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
View inflate = LayoutInflater.from(MainActivity.this).inflate(R.layout.pop, null);
final PopupWindow window = new PopupWindow(inflate, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
button0 = inflate.findViewById(R.id.btn_01);
button1 = inflate.findViewById(R.id.btn_02);
mQuXiao = inflate.findViewById(R.id.mQuXiao);
mQuXiao.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
window.dismiss();
}
});
button0.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_PICK, null);
intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);
startActivityForResult(intent, PHOTOZOOM);
window.dismiss();
}
});
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "temp.jpg")));
startActivityForResult(intent, PHOTOHRAPH);
}
});
window.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#63B8FF")));
window.setOutsideTouchable(true);
window.setFocusable(true);
window.showAtLocation(inflate, Gravity.BOTTOM, 0, 0);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == NONE)
return;
// 拍照
if (requestCode == PHOTOHRAPH) {
//设置文件保存路径这里放在跟目录下
File picture = new File(Environment.getExternalStorageDirectory() + "/temp.jpg");
startPhotoZoom(Uri.fromFile(picture));
}
if (data == null)
return;
// 读取相册缩放图片
if (requestCode == PHOTOZOOM) {
startPhotoZoom(data.getData());
}
// 处理结果
if (requestCode == PHOTORESOULT) {
Bundle extras = data.getExtras();
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0 - 100)压缩文件
//下面这两行是加入图片水印的，如果不想要，直接imageView.setImageBitmap(photo);就可以了
Bitmap bitmap = addTimeFlag(photo);
imageView.setImageBitmap(bitmap);
//---------------------------------下面的是将Bitmap转换成字符串保存至SharedPreferences
byte[] byteArray = stream.toByteArray();
String image = new String(Base64.encodeToString(byteArray, Base64.DEFAULT));
SharedPreferences spf = getSharedPreferences("testSP", 0);
SharedPreferences.Editor editor = spf.edit();
editor.putString("image", image);
editor.commit();
//-----------------------------------
}
}
super.onActivityResult(requestCode, resultCode, data);
}
public void startPhotoZoom(Uri uri) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, IMAGE_UNSPECIFIED);
intent.putExtra("crop", "true");
// aspectX aspectY 是宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
// outputX outputY 是裁剪图片宽高
intent.putExtra("outputX", 100);
intent.putExtra("outputY", 100);
intent.putExtra("return-data", true);
startActivityForResult(intent, PHOTORESOULT);
}
//图片水印
private Bitmap addTimeFlag(Bitmap src){
// 获取原始图片与水印图片的宽与高
int w = src.getWidth();
int h = src.getHeight();
Bitmap newBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
Canvas mCanvas = new Canvas(newBitmap);
// 往位图中开始画入src原始图片
mCanvas.drawBitmap(src, 0, 0, null);
//添加文字
Paint textPaint = new Paint();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String time = sdf.format(new Date(System.currentTimeMillis()));
textPaint.setColor(Color.RED) ;
textPaint.setTextSize(10);
String familyName = "宋体";
// Typeface typeface = Typeface.create(familyName,
// Typeface.BOLD_ITALIC);
// textPaint.setTypeface(typeface);
// textPaint.setTextAlign(Align.CENTER);
mCanvas.drawText(time, (float)(w*1)/7, (float)(h*14)/15, textPaint);
mCanvas.save();
mCanvas.restore();
return newBitmap ;
}
}
//下面介绍一下那个将Bitmap转换成字符串保存至SharedPreferences，并取出来的方法。
//------------------------------------1，将Bitmap转换成字符串保存至SharedPreferences------------------
//得到要保存的图片
Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
R.drawable.as);
// 第一步:将Bitmap压缩至字节数组输出流ByteArrayOutputStream
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 80, byteArrayOutputStream);
// 第二步:利用Base64将字节数组输出流中的数据转换成字符串String
byte[] byteArray = byteArrayOutputStream.toByteArray();
String image = new String(Base64.encodeToString(byteArray,
Base64.DEFAULT));
// 第三步:将String保持至SharedPreferences
SharedPreferences spf = getSharedPreferences("testSP", MODE_APPEND);
Editor editor = spf.edit();
editor.putString("image", image);
editor.commit();
//------------------------------------------2.从SharedPreferences中取出Bitmap，显示在ImageView中
SharedPreferences spf = getSharedPreferences("testSP", MODE_APPEND);
// 第一步:取出字符串形式的Bitmap
String image = spf.getString("image", "");
// 第二步:利用Base64将字符串转换为ByteArrayInputStream
byte[] byteArray = Base64.decode(image, Base64.DEFAULT);
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(
byteArray);
// 第三步:利用ByteArrayInputStream生成Bitmap
Bitmap bitmap = BitmapFactory.decodeStream(byteArrayInputStream);
//设置图片到imageview
mImageView.setImageBitmap(bitmap);