xml文件:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/take_photo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="take photo"
android:textAllCaps="false"/>
<Button
android:id="@+id/take_photo2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="take photo2"
android:textAllCaps="false"/>
<ImageView
android:id="@+id/pic"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
activity:
package com.example.myapplication;
import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Point;
import android.hardware.Camera;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v4.content.FileProvider;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URL;
/**
* Created by 刘入贵 on 2019/8/17.
*/
public class Camer extends AppCompatActivity {
public static String TAG="Camer.this";
private int Result_1=1;
private int Result_2=2;
private ImageView pic;
private String mfilepath;
private Button btn1;//take photo
private Button btn2;//take photo2
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cameralbumtest);
Button takephoto = (Button) findViewById(R.id.take_photo);
pic= (ImageView) findViewById(R.id.pic);;
//动态申请权限
int cameraPermission = ContextCompat.checkSelfPermission(Camer.this, Manifest.permission.CAMERA);
if (cameraPermission != PackageManager.PERMISSION_GRANTED) {
String[] PERMISSIONS_CAMERA_AND_STORAGE = {
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA};
ActivityCompat.requestPermissions(Camer.this, PERMISSIONS_CAMERA_AND_STORAGE, 0x001);
}
// android 7.0系统解决拍照的问题
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
builder.detectFileUriExposure();
//图片保存路径
mfilepath= Environment.getExternalStorageDirectory().getPath();
mfilepath=mfilepath+"/"+"temp.png";
btn1= (Button) findViewById(R.id.take_photo);
btn2= (Button) findViewById(R.id.take_photo2);
btn1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openCamera();
}
});
btn2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openCamera2();
}
});
}
//隐式调用intent,返回图片缩略图
private void openCamera() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent,Result_1);
}
//第二种方式
public void openCamera2(){
Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Uri photourl=Uri.fromFile(new File(mfilepath));
intent.putExtra(MediaStore.EXTRA_OUTPUT,photourl);
startActivityForResult(intent,Result_2);
}
//Intent调用的返回结果
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == Result_1) {
Bundle bundle = data.getExtras();
Bitmap bitmap = (Bitmap) bundle.get("data");
pic.setImageBitmap(bitmap);
}else if (requestCode==Result_2){
FileInputStream fis=null;
try {
fis=new FileInputStream(mfilepath);
Bitmap bitmap=BitmapFactory.decodeStream(fis);
pic.setImageBitmap(bitmap);
} catch (FileNotFoundException e) {
e.printStackTrace();
}finally {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
}