获取 resultCode= 0 和 requestCode = 2，无法获取带有图片的 picView。
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
final int CAMERA_CAPTURE = 1;
final int PIC_CROP = 2;
private Uri picUri;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button captureBtn = (Button)findViewById(R.id.capture_btn);
captureBtn.setOnClickListener(this);
}
/**
* Click method to handle user pressing button to launch camera
*/
public void onClick(View v) {
if (v.getId() == R.id.capture_btn) {
try {
Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(captureIntent, CAMERA_CAPTURE);
}
catch(ActivityNotFoundException anfe){
String errorMessage = "Whoops - your device doesn't support capturing images!";
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
}
/**
* Handle user returning from both capturing and cropping the image
*/
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if(requestCode == CAMERA_CAPTURE){
picUri = data.getData();
performCrop();
}
else if(requestCode == PIC_CROP){
Bundle extras = data.getExtras();
Bitmap thePic = extras.getParcelable("data");
ImageView picView = (ImageView)findViewById(R.id.picture);
picView.setImageBitmap(thePic);
}
} else {
String errorMessage = "Whoops - resultCode return: " + resultCode +" requestCode: " + requestCode;
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
/**
* Helper method to carry out crop operation
*/
private void performCrop(){
try {
Intent cropIntent = new Intent("com.android.camera.action.CROP");
cropIntent.setDataAndType(picUri, "image/*");
cropIntent.putExtra("crop", "true");
cropIntent.putExtra("aspectX", 1);
cropIntent.putExtra("aspectY", 1);
cropIntent.putExtra("outputX", 256);
cropIntent.putExtra("outputY", 256);
cropIntent.putExtra("return-data", true);
startActivityForResult(cropIntent, PIC_CROP);
}
catch(ActivityNotFoundException anfe){
String errorMessage = "Whoops - your device doesn't support the crop action!";
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
}
编辑：（添加如下，其中 data.getData() 始终为空）
final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 200;
public void onClick(View v) {
if (v.getId() == R.id.capture_btn) {
try {
Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//startActivityForResult(captureIntent, CAMERA_CAPTURE);
startActivityForResult(captureIntent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
catch(ActivityNotFoundException anfe){
String errorMessage = "Whoops - your device doesn't support capturing images!";
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// Image captured and saved to fileUri specified in the Intent
Toast.makeText(this, "Image saved to:\n" +
data.getData(), Toast.LENGTH_LONG).show();
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the image capture
} else {
// Image capture failed, advise user
}
}
if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// Video captured and saved to fileUri specified in the Intent
Toast.makeText(this, "Video saved to:\n" +
data.getData(), Toast.LENGTH_LONG).show();
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the video capture
} else {
// Video capture failed, advise user
}
}
}
编辑2：
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if(requestCode == CAMERA_CAPTURE){
picUri = data.getData();
performCrop();
}
else if(requestCode == PIC_CROP){
Bundle extras = data.getExtras();
Bitmap thePic = extras.getParcelable("data");
ImageView picView = (ImageView)findViewById(R.id.picture);
picView.setImageBitmap(thePic);
}
} else {
String errorMessage = "Whoops - resultCode return: " + resultCode +" requestCode: " + requestCode;
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
Bundle extras = data.getExtras();
Bitmap thePic = extras.getParcelable("data");
ImageView picView = (ImageView)findViewById(R.id.picture);
picView.setImageBitmap(thePic);
}
}