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Android从摄像头或相册中获取照片

2016-06-12 17:45 337 查看

Android从摄像头或相册中获取照片

关键代码:

/**
* 从相册中获取,返回结果会在onActivityResult()中
*/
private void selectPicFromAlbum() {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, RESULT_FROM_ALBUM);
}

/**
* 从摄像头中获取,返回结果会在onActivityResult()中
*/
private void selectPicFromCamera() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, RESULT_FROM_CAMERA);
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);

if (null == data) return;
switch (requestCode) {
case RESULT_FROM_ALBUM:
Uri imageUri = data.getData();

try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
imageView.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}

break;

case RESULT_FROM_CAMERA:
Bitmap bitmap = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(bitmap);
break;
}

}


具体代码:

package com.ashzheng.studydemo.demo7;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

import com.ashzheng.studydemo.R;

import java.io.IOException;

public class Demo7Activity extends Activity {

private ImageView imageView;
private TextView textView;

public static final int RESULT_FROM_ALBUM = 1;
public static final int RESULT_FROM_CAMERA = 2;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_demo7);

imageView = (ImageView) findViewById(R.id.demo7_iv);
textView = (TextView) findViewById(R.id.demo7_tv);

findViewById(R.id.demo7_bt1).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectPicFromAlbum();
}
});

findViewById(R.id.demo7_bt2).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectPicFromCamera();
}
});
}

/**
* 从相册中获取,返回结果会在onActivityResult()中
*/
private void selectPicFromAlbum() {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(intent, RESULT_FROM_ALBUM);
}

/**
* 从摄像头中获取,返回结果会在onActivityResult()中
*/
private void selectPicFromCamera() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, RESULT_FROM_CAMERA);
}

@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (null == data) return; switch (requestCode) { case RESULT_FROM_ALBUM: Uri imageUri = data.getData(); try { Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri); imageView.setImageBitmap(bitmap); } catch (IOException e) { e.printStackTrace(); } break; case RESULT_FROM_CAMERA: Bitmap bitmap = (Bitmap) data.getExtras().get("data"); imageView.setImageBitmap(bitmap); break; } }}
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标签:  摄像头 android