调用相机（隐式调用）
//自定义一个请求码 这里我设为10010
int 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() {
@Override
public 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Activity
startActivityForResult(intent, TAKE_PHOTO_REQUEST);
}
});
展示相机拍摄的图片
重写onActivityResult方法
@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);
}
}
}
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10010
int TAKE_PHOTO_REQUEST = 10010;
int RESULT_CANCELED = 0;//定义取消码
ImageView imageView_test;
@SuppressLint("MissingInflatedId")
@Override
protected 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() {
@Override
public 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Activity
startActivityForResult(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
