Android_相机相册的简单调用

添加权限

    <!--    设置SDK最小版本-->
    <uses-sdk android:minSdkVersion="14" />
    <!--    相机调用权限-->
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-feature android:name="android.hardware.camera" />
    <!--    外部存储读写权限-->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">
    <Button
        android:text="打开相机"
        android:id="@+id/xiang_Ji"
        android:layout_width="match_parent"
        android:layout_height="60dp">
    </Button>
    <Button
        android:text="打开相册"
        android:id="@+id/xiang_Ce"
        android:layout_width="match_parent"
        android:layout_height="60dp">
    </Button>
    <ImageView
        android:id="@+id/tu_Pian"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ImageView>
</LinearLayout>

主方法文件

package com.lyarn.demo_3_24;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {
    Button xiangJi,xiangCe;
    ImageView imageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        start();
        setXiangJi();
        setXiangCe();
    }
	
    public void start(){
        xiangJi=findViewById(R.id.xiang_Ji);
        xiangCe=findViewById(R.id.xiang_Ce);
        imageView=findViewById(R.id.tu_Pian);
    }
	
    public void setXiangJi(){
        xiangJi.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(intent,1);
            }
        });
    }
	
    public void setXiangCe(){
        xiangCe.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                startActivityForResult(intent,2);
            }
        });
    }
	
    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        try {
            if (requestCode==1){
                Bundle bundle=data.getExtras();
                Bitmap bitmap= (Bitmap) bundle.get("data");
                imageView.setImageBitmap(bitmap);
            }
            if (requestCode==2){
                Uri uri=data.getData();
                String[] strings={MediaStore.Images.Media.DATA};
                Cursor cursor=getContentResolver().query(uri,strings,null,null,null);
                cursor.moveToFirst();
                int columnIndex = cursor.getColumnIndex(strings[0]);
                String picturePath = cursor.getString(columnIndex);
                cursor.close();
                imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
            }
        }catch (Exception e){
            Log.d("e",e.toString());
        }
    }
}