Androd选取相册照片和拍照处理-android学习之旅(62)

实现如下图所示效果

核心代码 -构建打开相册和拍照的Intent

拍照

File outputImage = new File(Environment.getExternalStorageDirectory(),"tempImage.jpg");
try {
if (outputImage.exists()){
outputImage.delete();
}
outputImage.createNewFile();
}catch (Exception e){
e.printStackTrace();
}
imageUri = Uri.fromFile(outputImage);
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);
startActivityForResult(intent,TAKE_PHOTO);

打开相册

File outputFile = new File(Environment.getExternalStorageDirectory(),"output_image.jpg");
try {
if (outputFile.exists()){
outputFile.delete();
}
outputFile.createNewFile();
}catch (Exception e){
e.printStackTrace();
}
imageUri = Uri.fromFile(outputFile);
Intent intent = new Intent("android.intent.action.GET_CONTENT");
intent.setType("image/*");
intent.putExtra("crop",true);
intent.putExtra("scale",true);
intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);
startActivityForResult(intent,CROP_PHOTO);

整体代码

package com.example.euler_kalvinhe.takephoto;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

import java.io.File;

public class MainActivity extends Activity {
private static final int TAKE_PHOTO = 1;
private static final int CROP_PHOTO = 2;
private Button takePhoto;
private ImageView picture;
private Uri imageUri;
private Button choose;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
takePhoto = (Button) findViewById(R.id.button);
picture = (ImageView) findViewById(R.id.image);
choose = (Button) findViewById(R.id.choosePhoto);
choose.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
File outputFile = new File(Environment.getExternalStorageDirectory(),"output_image.jpg");
try {
if (outputFile.exists()){
outputFile.delete();
}
outputFile.createNewFile();
}catch (Exception e){
e.printStackTrace();
}
imageUri = Uri.fromFile(outputFile);
Intent intent = new Intent("android.intent.action.GET_CONTENT");
intent.setType("image/*");
intent.putExtra("crop",true);
intent.putExtra("scale",true);
intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);
startActivityForResult(intent,CROP_PHOTO);
}
});
takePhoto.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
File outputImage = new File(Environment.getExternalStorageDirectory(),"tempImage.jpg");
try {
if (outputImage.exists()){
outputImage.delete();
}
outputImage.createNewFile();
}catch (Exception e){
e.printStackTrace();
}
imageUri = Uri.fromFile(outputImage);
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);
startActivityForResult(intent,TAKE_PHOTO);
}
});
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode){
case TAKE_PHOTO:
if (resultCode == RESULT_OK){
Intent intent = new Intent("com.android.camera.action.CROP");
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));
picture.setImageBitmap(bitmap);
}catch (Exception e){
e.printStackTrace();
}
}
break;
default:
break;
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}
}