调用相机实现拍照

1.开启拍照权限

2.xml文件

<LinearLayout
        android:layout_width="300dp"
 android:layout_height="match_parent"
 android:layout_marginTop="15dp"
 android:gravity="center_horizontal"
 android:orientation="horizontal"
 android:visibility="gone">

 <ImageView
 android:id="@+id/iv_num"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_gravity="center_vertical"
 android:src="@mipmap/contact9" />

 <EditText
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_alignBaseline="@id/iv_num"
 android:layout_marginLeft="10dp"
 android:background="@null"
 android:focusable="true"
 android:hint="上传您的身份证正反面" />
 </LinearLayout>

 <LinearLayout
 android:layout_width="300dp"
 android:layout_height="wrap_content"
 android:layout_marginTop="5dp"
 android:orientation="horizontal">

 <ImageView
 android:id="@+id/id1"
 android:layout_width="0dp"
 android:layout_weight="1"
 android:layout_height="100dp"
 android:clickable="true"
 android:scaleType="fitXY"
 android:layout_margin="5dp"
 android:background="@mipmap/contact_pic1" />

 <ImageView
 android:id="@+id/id2"
 android:layout_width="0dp"
 android:layout_weight="1"
 android:layout_height="100dp"
 android:clickable="true"
 android:scaleType="fitXY"
 android:layout_margin="5dp"
 android:background="@mipmap/contact_pic2" />

 </LinearLayout>

</LinearLayout>
3.MainActivity.class

public class MainActivity extends Activity implements View.OnClickListener {
    /**
     * Called when the activity is first created.
 */
 private ImageView id1;
 private ImageView id2;
 private String SD_CARD_TEMP_DIR;
 private String SD_CARD_TEMP_DIR2;
 Bitmap myBitmap;
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 SD_CARD_TEMP_DIR = Environment.getExternalStorageDirectory()
 + File.separator + "front.jpg";//正面照片设定照相后保存的文件名，类似于缓存文件
 SD_CARD_TEMP_DIR2 = Environment.getExternalStorageDirectory()
 + File.separator + "reverse.jpg";//反面照片设定照相后保存的文件名，类似于缓存文件
 id1 = (ImageView) findViewById(R.id.id1);
 id2 = (ImageView) findViewById(R.id.id2);
 id1.setOnClickListener(this);
 id2.setOnClickListener(this);
 }
 @Override
 public void onClick(View v) {
 switch (v.getId()) {
 case R.id.id1:
 //拍照
 setCameras(1);

 break;
 case R.id.id2:
 setCameras(-1);
 break;
 }
 }
 private void setCameras(int i) {
 Intent cameraIntent = new Intent(
 MediaStore.ACTION_IMAGE_CAPTURE);

 if (i == 1) {
 cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
 Uri.fromFile(new File(SD_CARD_TEMP_DIR)));

 startActivityForResult(cameraIntent, 0);
 } else if (i == -1) {
 cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
 Uri.fromFile(new File(SD_CARD_TEMP_DIR2)));

 startActivityForResult(cameraIntent, 1);
 }
 }

 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 super.onActivityResult(requestCode, resultCode, data);
 if (requestCode == 0) {
 Log.e("requestCode", "Need 0");
 if (resultCode == RESULT_OK) {
 Log.e("resultCode", "OK!!!" + SD_CARD_TEMP_DIR);
 myBitmap = BitmapFactory.decodeFile(SD_CARD_TEMP_DIR);
 id1.setImageBitmap(myBitmap);
 } else {
 Log.e("resultCode", "" + resultCode);
 }
 } else if (requestCode == 1) {
 Log.e("requestCode", "Need 1");
 if (resultCode == RESULT_OK) {
 Log.e("resultCode", "OK!!!" + SD_CARD_TEMP_DIR2);
 myBitmap = BitmapFactory.decodeFile(SD_CARD_TEMP_DIR2);
 id2.setImageBitmap(myBitmap);
 } else {
 Log.e("resultCode", "" + resultCode);
 }
 } else {
 Log.e("requestCode", "Not Need");
 }
 }

}