Android调用相机和相册详解
Android调用相机和相册详解
主要是想实现头像的更改
xml内容
我用的是XUI的自定义控件 gradient_background是自定义的渐变背景色
gradient_background.xml内容如下，渐变色背景
实现的页面效果如下
activity部分
package cn.lision.mas.activity.mine;
import android.Manifest;
import android.annotation.TargetApi;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.view.View;
import com.xuexiang.xui.widget.actionbar.TitleBar;
import com.xuexiang.xui.widget.dialog.bottomsheet.BottomSheet;
import com.xuexiang.xui.widget.imageview.RadiusImageView;
import com.xuexiang.xutil.tip.ToastUtils;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.core.content.FileProvider;
import cn.lision.mas.R;
import cn.lision.mas.base.BaseActivity;
/**
* 头像更换
*/
public class HeadChangeActivity extends BaseActivity {
private Context context;
private RadiusImageView headImage;
private Uri imageUri;
public static final int TAKE_PHOTO = 1;
public static final int CHOOSE_PHOTO = 2;
private String orientation = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_head_change);
context = this;
TitleBar titleBar = initTitle("更换头像");
initViews();
}
@Override
public void initViews() {
headImage = (RadiusImageView) findViewById(R.id.headImage);
headImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showSimpleBottomSheetList();
}
});
}
private void showSimpleBottomSheetList() {
new BottomSheet.BottomListSheetBuilder(context)
.addItem("从相册选择图片")
.addItem("拍照")
.addItem("取消")
.setIsCenter(true)
.setOnSheetItemClickListener(new BottomSheet.BottomListSheetBuilder.OnSheetItemClickListener() {
@Override
public void onClick(BottomSheet dialog, View itemView, int position, String tag) {
dialog.dismiss();
if (position == 0) {
if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(HeadChangeActivity.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 2);
} else {
goPhotoAlbum();
}
} else if (position == 1) {
File file = new File(getExternalCacheDir(), "output_image.jpg");
try {
if (file.exists()) {
file.delete();
}
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
if (Build.VERSION.SDK_INT >= 24) {
imageUri = FileProvider.getUriForFile(HeadChangeActivity.this, "com.example.cameraalbumtest.fileprovider", file);
} else {
imageUri = Uri.fromFile(file);
}
if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(HeadChangeActivity.this, new String[]{Manifest.permission.CAMERA}, 1);
} else {
callCamera();
}
} else {
dialog.dismiss();
}
}
})
.build()
.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case TAKE_PHOTO:
if (resultCode == RESULT_OK) {
try {
Bitmap bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(imageUri));
headImage.setImageBitmap(bitmap);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
break;
case CHOOSE_PHOTO:
if (resultCode == RESULT_OK) {
//判断手机系统版本号
if (Build.VERSION.SDK_INT >= 19) {
//4.4及以上系统使用
handleImageOnKitKat(data);
} else {
handleImageBeforeKitKat(data);
}
}
break;
default:
break;
}
}
//激活相册操作
private void goPhotoAlbum() {
Intent intent = new Intent("android.intent.action.GET_CONTENT");
intent.setType("image/*");
startActivityForResult(intent, CHOOSE_PHOTO);
}
//打开相机
private void callCamera() {
//启动相机权限
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, TAKE_PHOTO);
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
//打开相册
case CHOOSE_PHOTO:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
goPhotoAlbum();
} else {
ToastUtils.toast("您没有打开相册的权限");
}
break;
//相机的权限
case TAKE_PHOTO:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
callCamera();
} else {
ToastUtils.toast("您没有打开相机的权限");
}
break;
default:
break;
}
}
@TargetApi(19)
private void handleImageOnKitKat(Intent data) {
String imagePath = null;
Uri uri = data.getData();
if (DocumentsContract.isDocumentUri(this, uri)) {
String docId = DocumentsContract.getDocumentId(uri);
if ("com.android.providers.media.documents".equals(uri.getAuthority())) {
String id = docId.split(":")[1];
String selection = MediaStore.Images.Media._ID + "=" + id;
imagePath = getImagePath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection);
} else if ("com.android.providers.downloads.documents".equals(uri.getAuthority())) {
Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(docId));
imagePath = getImagePath(contentUri, null);
}
} else if ("content".equalsIgnoreCase(uri.getScheme())) {
//如果是content类型的Uri，则使用普通方式处理
imagePath = getImagePath(uri, null);
} else if ("file".equalsIgnoreCase(uri.getScheme())) {
imagePath = uri.getPath();
}
dispalyImage(imagePath);
}
private void handleImageBeforeKitKat(Intent data) {
Uri uri = data.getData();
String imagePath = getImagePath(uri, null);
dispalyImage(imagePath);
}
private String getImagePath(Uri uri, String selection) {
String path = null;
//通过uri和selection来获取真实的图片路径
Cursor cursor = getContentResolver().query(uri, null, selection, null, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
}
orientation = cursor.getString(cursor.getColumnIndex("orientation"));// 获取旋转的角度
cursor.close();
}
return path;
}
private void dispalyImage(String imagePath) {
if (imagePath != null) {
//根据path读取资源路径
Bitmap bitmap = BitmapFactory.decodeFile(imagePath);
int angle = 0;
if (orientation != null && !"".equals(orientation)) {
angle = Integer.parseInt(orientation);
}
if (angle != 0) {
// 下面的方法主要作用是把图片转一个角度，也可以放大缩小等
Matrix m = new Matrix();
int width = bitmap.getWidth();
int height = bitmap.getHeight();
m.setRotate(angle); // 旋转angle度
bitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, m, true);// 从新生成图片
}
headImage.setImageBitmap(bitmap);
} else {
ToastUtils.toast("获取照片失败");
}
}
}
最终实现的结果
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