模仿有的app从相机或图库选择图片的Demo,如下图
首先点击选取图片按钮,在底部出来PopupWindow,上头有三个按钮。
1、点击相机开始拍照,拍照成功返回照片显示在ImageView中,
2、点击图库,从图库选取一张图片并返回显示在ImageVIew中;
以下是核心代码:
PopupWindow的代码:
package com.example.yinfeng.mydemo;
import android.app.Activity;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.PopupWindow;
import android.widget.RelativeLayout;
import android.widget.Toast;
/**
* Created by yinfeng on 14-7-23.
*/
public class SelectPopupWindow extends PopupWindow implements View.OnClickListener {
private Button btn_camera;
private Button btn_gallery;
private Button btn_cancel;
private View view;
public SelectPopupWindow(Activity context, View.OnClickListener listener) {
super(context);
view = LayoutInflater.from(context).inflate(R.layout.layout_popwindow, null);
btn_camera = (Button) view.findViewById(R.id.btn_camera);
btn_cancel = (Button) view.findViewById(R.id.btn_cancel);
btn_gallery = (Button) view.findViewById(R.id.btn_gallery);
btn_cancel.setOnClickListener(this);
btn_camera.setOnClickListener(listener);
btn_gallery.setOnClickListener(listener);
this.setContentView(view);
this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
this.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
this.setFocusable(true);
this.setAnimationStyle(R.style.AnimBottom);
ColorDrawable drawable = new ColorDrawable(0xb0000000);
this.setBackgroundDrawable(drawable);
view.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
int height = view.findViewById(R.id.rl).getTop();
int y = (int) event.getY();
if (event.getAction() == MotionEvent.ACTION_UP) {
if (y < height) {
dismiss();
}
}
return true;
}
});
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_cancel:
this.dismiss();
break;
}
}
}
package com.example.yinfeng.mydemo;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.FileNotFoundException;
public class MyActivity extends Activity {
private Button btn_camera;
private SelectPopupWindow window;
private ImageView imageView;
private Intent intent_gallery;
private Intent intent_camera;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
initView();
intent_gallery = new Intent();
intent_gallery.setAction(Intent.ACTION_GET_CONTENT);
intent_gallery.setType("image/*");
intent_camera = new Intent();
intent_camera.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
btn_camera.setOnClickListener(listener);
window = new SelectPopupWindow(this, listener);
}
private void initView(){
imageView = (ImageView) findViewById(R.id.imageView);
btn_camera = (Button) findViewById(R.id.btn_select);
}
private View.OnClickListener listener = new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_select:
window.showAtLocation(MyActivity.this.findViewById(R.id.ll), Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);
break;
case R.id.btn_camera:
Toast.makeText(MyActivity.this, "相机", Toast.LENGTH_SHORT).show();
startActivityForResult(intent_camera, 1);
window.dismiss();
break;
case R.id.btn_gallery:
Toast.makeText(MyActivity.this, "图库", Toast.LENGTH_SHORT).show();
startActivityForResult(intent_gallery, 2);
window.dismiss();
break;
}
}
};
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
Uri uri = data.getData();
if(uri!=null){
Log.i("Demo",uri.toString());
ContentResolver resolver = this.getContentResolver();
try {
Bitmap bitmap = BitmapFactory.decodeStream(resolver.openInputStream(uri));
imageView.setImageBitmap(bitmap);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}else{
Bundle bundle = data.getExtras();
Bitmap bitmap = bundle.getParcelable("data");
imageView.setImageBitmap(bitmap);
}
}
super.onActivityResult(requestCode, resultCode, data);
}
}