嘿，我是android和eclipse环境的新手。我不知道Java。我正在尝试创建一个应用程序来打开android设备的相机。这就是我的主要activity.java的样子
package com.example.trycamera2;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity {
private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
private Uri fileUri;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = (Button) findViewById(R.id.button_send);*****
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File dir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/xray");
dir.mkdirs();
File file = new File(dir, "tmp_avatar_"
+ String.valueOf(System.currentTimeMillis()) + ".jpg");
fileUri = Uri.fromFile(file);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
});
};
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
Bitmap tempBitmap = (Bitmap) data.getExtras().get("data");
FileOutputStream out;
try {
out = new FileOutputStream(fileUri.getPath());
tempBitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
Log.v("ManageImage-other", "another phone type");
e.printStackTrace();
}
// 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
}
}
}
}
在星标行中的 button_send 下有一个红色标记...它显示了替代 action_settings 而不是 button_send ....但是当我用 action_settings 替换并运行时，启动被取消。无法在模拟器上安装 .apk ..any帮助将非常有用。