package camera.com.example.gzh.camera;

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

import java.io.File;

public class MainActivity
        extends AppCompatActivity
{

    private ImageView mImageView;
    private String mpathbit;  //設定一個sd卡的路徑存放圖片
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mImageView = (ImageView) findViewById(R.id.iv);
        mpathbit= Environment.getExternalStorageDirectory().getPath();
        mpathbit=mpathbit+"/"+"tt.png";

    }
    public void check1(View view){
        startActivityForResult(new Intent(MediaStore.ACTION_IMAGE_CAPTURE),1);
    }
    public void check2(View view){
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        Uri uri=Uri.fromFile(new File(mpathbit));
        intent.putExtra(MediaStore.EXTRA_OUTPUT,uri);
        startActivityForResult(intent,2);
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode==1&&resultCode==RESULT_OK){
            Bundle bundle = data.getExtras();
            Bitmap bim = (Bitmap) bundle.get("data");
            mImageView.setImageBitmap(bim);
        }
        if (requestCode==2&&resultCode==RESULT_OK){
            Bitmap bitmap = BitmapFactory.decodeFile(mpathbit);
            mImageView.setImageBitmap(bitmap);
        }
    }
}
 

xml

<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:id="@+id/activity_main"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <Button
        android:text="點選進入相機"
        android:id="@+id/btn1"
        android:onClick="check1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    <Button
        android:text="進入相機高質量圖片"
        android:id="@+id/btn2"
        android:onClick="check2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    <ImageView
        android:id="@+id/iv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</LinearLayout>
 

清單檔案中的許可權

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>