实例介绍
【实例简介】
【实例截图】
【核心代码】
package id.zelory.compressor.sample;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.io.File;
import java.io.IOException;
import java.text.DecimalFormat;
import java.util.Random;
import id.zelory.compressor.Compressor;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.functions.Consumer;
import io.reactivex.schedulers.Schedulers;
public class MainActivity extends AppCompatActivity {
private static final int PICK_IMAGE_REQUEST = 1;
private ImageView actualImageView;
private ImageView compressedImageView;
private TextView actualSizeTextView;
private TextView compressedSizeTextView;
private File actualImage;
private File compressedImage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
actualImageView = (ImageView) findViewById(R.id.actual_image);
compressedImageView = (ImageView) findViewById(R.id.compressed_image);
actualSizeTextView = (TextView) findViewById(R.id.actual_size);
compressedSizeTextView = (TextView) findViewById(R.id.compressed_size);
actualImageView.setBackgroundColor(getRandomColor());
clearImage();
}
public void chooseImage(View view) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, PICK_IMAGE_REQUEST);
}
public void compressImage(View view) {
if (actualImage == null) {
showError("Please choose an image!");
} else {
// Compress image in main thread
//compressedImage = new Compressor(this).compressToFile(actualImage);
//setCompressedImage();
// Compress image to bitmap in main thread
//compressedImageView.setImageBitmap(new Compressor(this).compressToBitmap(actualImage));
// Compress image using RxJava in background thread
new Compressor(this)
.compressToFileAsFlowable(actualImage)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<File>() {
@Override
public void accept(File file) {
compressedImage = file;
setCompressedImage();
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) {
throwable.printStackTrace();
showError(throwable.getMessage());
}
});
}
}
public void customCompressImage(View view) {
if (actualImage == null) {
showError("Please choose an image!");
} else {
// Compress image in main thread using custom Compressor
try {
compressedImage = new Compressor(this)
.setMaxWidth(640)
.setMaxHeight(480)
.setQuality(75)
.setCompressFormat(Bitmap.CompressFormat.WEBP)
.setDestinationDirectoryPath(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES).getAbsolutePath())
.compressToFile(actualImage);
setCompressedImage();
} catch (IOException e) {
e.printStackTrace();
showError(e.getMessage());
}
// Compress image using RxJava in background thread with custom Compressor
/*new Compressor(this)
.setMaxWidth(640)
.setMaxHeight(480)
.setQuality(75)
.setCompressFormat(Bitmap.CompressFormat.WEBP)
.setDestinationDirectoryPath(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES).getAbsolutePath())
.compressToFileAsFlowable(actualImage)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<File>() {
@Override
public void accept(File file) {
compressedImage = file;
setCompressedImage();
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) {
throwable.printStackTrace();
showError(throwable.getMessage());
}
});*/
}
}
private void setCompressedImage() {
compressedImageView.setImageBitmap(BitmapFactory.decodeFile(compressedImage.getAbsolutePath()));
compressedSizeTextView.setText(String.format("Size : %s", getReadableFileSize(compressedImage.length())));
Toast.makeText(this, "Compressed image save in " compressedImage.getPath(), Toast.LENGTH_LONG).show();
Log.d("Compressor", "Compressed image save in " compressedImage.getPath());
}
private void clearImage() {
actualImageView.setBackgroundColor(getRandomColor());
compressedImageView.setImageDrawable(null);
compressedImageView.setBackgroundColor(getRandomColor());
compressedSizeTextView.setText("Size : -");
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK) {
if (data == null) {
showError("Failed to open picture!");
return;
}
try {
actualImage = FileUtil.from(this, data.getData());
actualImageView.setImageBitmap(BitmapFactory.decodeFile(actualImage.getAbsolutePath()));
actualSizeTextView.setText(String.format("Size : %s", getReadableFileSize(actualImage.length())));
clearImage();
} catch (IOException e) {
showError("Failed to read picture data!");
e.printStackTrace();
}
}
}
public void showError(String errorMessage) {
Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT).show();
}
private int getRandomColor() {
Random rand = new Random();
return Color.argb(100, rand.nextInt(256), rand.nextInt(256), rand.nextInt(256));
}
public String getReadableFileSize(long size) {
if (size <= 0) {
return "0";
}
final String[] units = new String[]{"B", "KB", "MB", "GB", "TB"};
int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
return new DecimalFormat("#,##0.#").format(size / Math.pow(1024, digitGroups)) " " units[digitGroups];
}
}
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