package com.lichao.bwei.com.xiangji;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.File;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
String path = Environment.getExternalStorageDirectory()+"/a.png";
private Button btn;
private ImageView img;
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void setImage() {
final String[] items = { "相册","相机" };
AlertDialog.Builder listDialog =
new AlertDialog.Builder(MainActivity.this);
listDialog.setTitle("选择头像");
listDialog.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// which 下标从0开始
// ...To-do
switch (which){
case 0:
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, 101);
break;
case 1:
Intent intent1 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent1.addCategory("android.intent.category.DEFAULT");
//见图片存入内存
intent1.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(path)));
startActivityForResult(intent1, 1000);
break;
}
}
});
listDialog.show();
}
private void initView() {
btn = (Button) findViewById(R.id.btn);
img = (ImageView) findViewById(R.id.imageView);
btn.setOnClickListener(this);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode==1000 && resultCode==RESULT_OK){
//裁剪
Intent mintent = new Intent("com.android.camera.action.CROP");
mintent.setDataAndType(Uri.fromFile(new File(path)),"image/*");
//是否支持剪裁
mintent.putExtra("crop", true);
mintent.putExtra("acpactX", 1);
mintent.putExtra("acpactY", 1);
mintent.putExtra("outputX", 250);
mintent.putExtra("outputY", 250);
//返回
mintent.putExtra("return-data", true);
startActivityForResult(mintent, 2000);
}
if (requestCode == 101 && resultCode == RESULT_OK) {
//从图库里获取照片 uri选取图片的地址
Uri uri = data.getData();
//img.setImageURI(uri);
//剪裁
Intent mintent = new Intent("com.android.camera.action.CROP");
mintent.setDataAndType(uri, "image/*");
//设置选取图片是否支持剪裁
mintent.putExtra("crop", true);
// 裁剪框的比例,1:1
mintent.putExtra("acpactX", 1);
mintent.putExtra("acpactY", 1);
// 裁剪后输出图片的尺寸大小
mintent.putExtra("outputX", 250);
mintent.putExtra("outputY", 250);
//是否将裁剪数据保留在Bitmap中返回
mintent.putExtra("return-data", true);
startActivityForResult(mintent, 202);
}
if (requestCode == 202 && resultCode == RESULT_OK ) {
//拿到剪裁后的图片,设置到imageview;
Bitmap bitmap = data.getParcelableExtra("data");
img.setImageBitmap(bitmap);
}
if(requestCode==2000 && resultCode==RESULT_OK){
Bitmap bitmap = data.getParcelableExtra("data");
img.setImageBitmap(bitmap);
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn:
setImage();
break;
}
}
}
权限
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />