AndroidDeviceMonitor 打不开 data 文件夹

AndroidDeviceMonitor 打不开 data 文件夹

好像更AndroidImage有关。

intent Camera

intent Camera

    protected void t1() {
        Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(intent, 1);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        ImageView imageView = (ImageView) findViewById(R.id.imageView);
        Bundle bu = data.getExtras();
        Bitmap bt = (Bitmap) bu.get("data");
        imageView.setImageBitmap(bt);
    }


https://developer.android.com/training/camera/photobasics.html

static final int REQUEST_IMAGE_CAPTURE = 1;

private void dispatchTakePictureIntent() {
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
    }
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");
        mImageView.setImageBitmap(imageBitmap);
    }
}

Android 的第一款軟體誕生

Android 的第一款軟體誕生。利用了Flickr提供的圖片查詢API按照名稱
查詢圖片，並顯示在手機上。

2016年5月開始接觸JAVA, 本軟體是邊學邊用的結果。

下一款軟體爭取能夠公開在GooglePlay上。

下載地址
app-free-release.apk
https://www.asuswebstorage.com/navigate/s/181301E935CB4FD480EB2D54B763A9A9Y

Java CallBack 练习

Java CallBack 练习

https://paiza.io/projects/J4kb3mqHFWTylgPFh_q-sw

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws Exception {
        Text1 tt1 = new Text1();
        tt1.t1(new Text1.CallBack(){
            public void gets(String x){
                System.out.println(x);
            }
            public void gety(String y){
                System.out.println(y);
            }
        });
    }
}

class Text1{
    interface CallBack{
        public void gets(String x);
        public void gety(String y);
    }

    public void t1( CallBack cb){
        int i = 6;
        for(; i < 200; i++){
        }
        if(i%2 == 0){
            cb.gets("x" + i + "");
        }else{
            cb.gety("y" + i + "");
        }
    }
}

Android AdMob広告

Android AdMob広告

build.gradle
dependencies {
    ...
    implementation 'com.google.android.gms:play-services-ads:11.8.0'
}


import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdSize;
import com.google.android.gms.ads.AdView;



    protected void admo() {
//        xmlns:ads="http://schemas.android.com/apk/res-auto"
        ViewGroup viewGroup = (ViewGroup) findViewById(R.id.activity_main);
        RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        AdView adView = new AdView(this);
        adView.setBackgroundColor(ContextCompat.getColor(this, R.color.colorAccent));
        adView.setLayoutParams(layoutParams);
        layoutParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
        layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        adView.setAdSize(AdSize.BANNER);
        adView.setAdUnitId("ca-app-pub-3940256099942544/6300978111");
        AdRequest adRequest = new AdRequest.Builder().build();
        adView.loadAd(adRequest);
        viewGroup.addView(adView);
    }

https://developers.google.com/admob/android/banner

Set Up Google Play Services
https://developers.google.com/android/guides/setup


        AdRequest.Builder adRequest = new AdRequest.Builder();
        adRequest.addTestDevice("7026FA2EC1DC7E60FBEA02C64D33BD8B"); //asus
        adRequest.addTestDevice("53185CF5BFA5B2121DF7FA86E7064C22"); //huawei
        adView.loadAd(adRequest.build());



<manifest>
    <application>
        <!-- Sample AdMob App ID: ca-app-pub-3940256099942544~3347511713 -->
        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="[ADMOB_APP_ID]"/>
    </application>
</manifest>



public class MainActivity extends AppCompatActivity {
    ...
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Sample AdMob app ID: ca-app-pub-3940256099942544~3347511713
        MobileAds.initialize(this, "YOUR_ADMOB_APP_ID");
    }
    ...
}




https://developers.google.com/admob/android/test-ads
Enable test devices

Android MediaPlayer

Android MediaPlayer

    protected void t1() {
        try {
            String url = "http://www.ne.jp/asahi/music/myuu/wave/menuettm.mp3";
//          Uri mu = Uri.parse("http://www.ne.jp/asahi/music/myuu/wave/menuettm.mp3");
            MediaPlayer mediaPlayer = new MediaPlayer();
            mediaPlayer.setAudioStreamType(AudioManager.STREAM_RING);
//          mediaPlayer.setDataSource(getApplicationContext(), mu);
            mediaPlayer.prepare();
            mediaPlayer.start();
            mediaPlayer.setDataSource(url);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

Android bindService

Android bindService