? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 package zhangpgil.photo; import java.io.File; import android.support.v7.app.ActionBarActivity; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; import android.content.Intent; import android.graphics.Bitmap; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; public class MainActivity extends ActionBarActivity { private static final String IMAGE_FILE_NAME = "temp_head_image.jpg"; private static final int CODE_GALLERY_REQUEST = 0xa0; private static final int CODE_CAMERA_REQUEST = 0xa1; private static final int CODE_RESULT_REQUEST = 0xa2; // 裁剪后图片的宽(X)和高(Y),480 X 480的正方形。（生成bitmap貌似有时要报错？可试下把大小弄小点） private static int output_X = 480; private static int output_Y = 480; private ImageView headImage = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); headImage = (ImageView) findViewById(R.id.imageView); Button buttonLocal = (Button) findViewById(R.id.buttonLocal); buttonLocal.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { choseHeadImageFromGallery(); } }); Button buttonCamera = (Button) findViewById(R.id.buttonCamera); buttonCamera.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { choseHeadImageFromCameraCapture(); } }); } // 从本地相册选取图片作为头像 private void choseHeadImageFromGallery() { Intent intentFromGallery = new Intent(); // 设置文件类型 intentFromGallery.setType("image/*"); intentFromGallery.setAction(Intent.ACTION_GET_CONTENT); startActivityForResult(intentFromGallery, CODE_GALLERY_REQUEST); } // 启动手机相机拍摄照片作为头像 private void choseHeadImageFromCameraCapture() { Intent intentFromCapture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); // 判断存储卡是否可用，存储照片文件 if (hasSdcard()) { intentFromCapture.putExtra(MediaStore.EXTRA_OUTPUT, Uri .fromFile(new File(Environment .getExternalStorageDirectory(), IMAGE_FILE_NAME))); } startActivityForResult(intentFromCapture, CODE_CAMERA_REQUEST); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { // 用户没有进行有效的设置操作，返回 if (resultCode == RESULT_CANCELED) { Toast.makeText(getApplication(), "取消", Toast.LENGTH_LONG).show(); return; } switch (requestCode) { case CODE_GALLERY_REQUEST: cropRawPhoto(intent.getData()); break; case CODE_CAMERA_REQUEST: if (hasSdcard()) { File tempFile = new File( Environment.getExternalStorageDirectory(), IMAGE_FILE_NAME); cropRawPhoto(Uri.fromFile(tempFile)); } else { Toast.makeText(getApplication(), "没有SDCard!", Toast.LENGTH_LONG) .show(); } break; case CODE_RESULT_REQUEST: if (intent != null) { setImageToHeadView(intent); } break; } super.onActivityResult(requestCode, resultCode, intent); } /** * 裁剪原始的图片 */ public void cropRawPhoto(Uri uri) { Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(uri, "image/*"); // 设置裁剪 intent.putExtra("crop", "true"); // aspectX , aspectY :宽高的比例 intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); // outputX , outputY : 裁剪图片宽高 intent.putExtra("outputX", output_X); intent.putExtra("outputY", output_Y); intent.putExtra("return-data", true); startActivityForResult(intent, CODE_RESULT_REQUEST); } /** * 提取保存裁剪之后的图片数据，并设置头像部分的View */ private void setImageToHeadView(Intent intent) { Bundle extras = intent.getExtras(); if (extras != null) { Bitmap photo = extras.getParcelable("data"); headImage.setImageBitmap(photo); } } /** * 检查设备是否存在SDCard的工具方法 */ public static boolean hasSdcard() { String state = Environment.getExternalStorageState(); if (state.equals(Environment.MEDIA_MOUNTED)) { // 有存储的SDCard return true; } else { return false; } } } ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <ImageView android:id="@+id/imageView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_launcher" /> <Button android:id="@+id/buttonLocal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="本地相册选取头像" /> <Button android:id="@+id/buttonCamera" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="手机拍照选取头像" /> </LinearLayout>

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