调用系统相机和相册以及裁剪实现图片的上传
//清单文件中的权限
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
//activity_main
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/bt_take_photo"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="相机" />
<Button
android:id="@+id/bt_take_phoos"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="相册" />
<ImageView
android:id="@+id/iamge"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" />
</LinearLayout>
//代码区域喽
package com.example.camatedemo;
import java.io.File;
import java.util.Date;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.net.Uri.Builder;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
private ImageView iamge;
private File sdRoot;
private Uri uri;
private static final int CAMERA = 123;
private static final int CROP_REQUEST_CODE = 1212;
private static final int CAMERA_ACTION_PICK = 124;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button bt_take_photo = (Button) findViewById(R.id.bt_take_photo);
Button bt_take_phoos = (Button) findViewById(R.id.bt_take_phoos);
iamge = (ImageView) findViewById(R.id.iamge);
bt_take_phoos.setOnClickListener(this);
bt_take_photo.setOnClickListener(this);
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
File dir = Environment.getExternalStorageDirectory();
sdRoot = new File(dir, "images");
if (sdRoot.exists()) {
sdRoot.mkdir();
}
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.bt_take_photo:
Intent intent1 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File imagePath = new File(sdRoot, new Date().toString() + ".jpg");
uri = Uri.fromFile(imagePath);
intent1.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(intent1, CAMERA);
break;
case R.id.bt_take_phoos:
Intent intent3 = new Intent(Intent.ACTION_PICK);
intent3.setType("image/*");
startActivityForResult(intent3, CAMERA_ACTION_PICK);
break;
default:
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Toast.makeText(this, requestCode + "ss", 0).show();
if (requestCode == CAMERA) {
Intent intent2 = new Intent("com.android.camera.action.CROP");
CommIntnnt(intent2);
} else if (requestCode == CROP_REQUEST_CODE) {
Bitmap bm = (Bitmap) data.getExtras().get("data");
iamge.setImageBitmap(bm);
} else if (requestCode == CAMERA_ACTION_PICK) {
Uri uri2 = data.getData();
iamge.setImageURI(uri2);
}
}
public Intent CommIntnnt(Intent intent) {
intent.setDataAndType(uri, "image/*");
// 可裁剪
intent.putExtra("crop", "true");// 可裁剪
// 宽高比
intent.putExtra("aspectX", 1); // 裁剪的宽比例
intent.putExtra("aspectY", 1); // 裁剪的高比例 // 宽高的具体像素
intent.putExtra("outputX", 300); // 裁剪的宽度
intent.putExtra("outputY", 300); // 裁剪的高度
intent.putExtra("scale", true); // 支持缩放
// 裁剪后输出的路径
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.parse(uri + ".bak")); // 将裁剪的结果输出到指定的Uri
// 必须要添加的一句话,否则返回的Intent中不会有数据
intent.putExtra("return-data", true); // 若为true则表示返回数据
// 可以省略
intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());// 裁剪成的图片的格式
// intent.putExtra("noFaceDetection", true); //启用人脸识别
startActivityForResult(intent, CROP_REQUEST_CODE);
return intent;
}
}
实现的效果