Android 调用系统拍照

主类:
 

package com.example.day07zhaoxiangji;

import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private Button takePhono;
    private ImageView showphono;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initView();
    }

    private void initView() {
        takePhono = (Button) findViewById(R.id.takePhono);
        showphono = (ImageView) findViewById(R.id.showphono);

        takePhono.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            //点击按钮的事件
            case R.id.takePhono:
                //隐式意图
                Intent intent = new Intent();
                //表示调用系统的照相机
                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
                //跳转
                startActivityForResult(intent, 100);
                break;
        }
    }

    //方法的回调
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        //刚才拍摄的照片就保存在data中
        Bitmap bitmap = (Bitmap) data.getExtras().get("data");
        //设置图片
        showphono.setImageBitmap(bitmap);
    }
}

布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:orientation="vertical"
    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">

    <Button
        android:text="点击拍照"
        android:id="@+id/takePhono"
        android:layout_width="match_parent"
        android:layout_height="50dp" />
    <ImageView
        android:id="@+id/showphono"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>