Android调用相机拍照，展示拍摄的图片

调用相机（隐式调用）

//自定义一个请求码 这里我设为10010int TAKE_PHOTO_REQUEST = 10010;int RESULT_CANCELED = 0;//定义取消码//触发监听，调用相机image_camera.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {//创建一个意图，这里指的是相机Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//开启这个意图，并将状态码传给目标ActivitystartActivityForResult(intent, TAKE_PHOTO_REQUEST);}});

展示相机拍摄的图片

重写onActivityResult方法

@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);//在日志中打印当前的请求码和返回码Log.i("TAG", "resultCode:"+resultCode);Log.i("TAG", "requestCode:"+requestCode);if (resultCode == RESULT_CANCELED) {if (requestCode==TAKE_PHOTO_REQUEST)Toast.makeText(MainActivity.this, "取消了拍照", Toast.LENGTH_LONG).show();}if (requestCode == TAKE_PHOTO_REQUEST){if (data!=null){//将返回的图片数据使用Bitmap类型变量targetBitmap 接收Bitmap targetBitmap = data.getParcelableExtra("data");//将targetBitmap 展示在ImageView组件imageView_test上imageView_test.setImageBitmap(targetBitmap);}}}

完整代码

import androidx.appcompat.app.AppCompatActivity;
import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;public class MainActivity extends AppCompatActivity {//自定义一个请求码 这里我设为10010int TAKE_PHOTO_REQUEST = 10010;int RESULT_CANCELED = 0;//定义取消码ImageView imageView_test;@SuppressLint("MissingInflatedId")@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);imageView_test = findViewById(R.id.imageView_test);findViewById(R.id.image_camera).setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {//创建一个意图，这里指的是相机Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//开启这个意图，并将状态码传给目标ActivitystartActivityForResult(intent, TAKE_PHOTO_REQUEST);}});}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);//在日志中打印当前的请求码和返回码Log.i("TAG", "resultCode:"+resultCode);Log.i("TAG", "requestCode:"+requestCode);if (resultCode == RESULT_CANCELED) {if (requestCode==TAKE_PHOTO_REQUEST)Toast.makeText(MainActivity.this, "取消了拍照", Toast.LENGTH_LONG).show();}if (requestCode == TAKE_PHOTO_REQUEST){if (data!=null){//将返回的图片数据使用Bitmap类型变量targetBitmap 接收Bitmap targetBitmap = data.getParcelableExtra("data");//将targetBitmap 展示在ImageView组件imageView_test上imageView_test.setImageBitmap(targetBitmap);}}
}
}

效果演示